diff --git a/InvenTree/InvenTree/api.py b/InvenTree/InvenTree/api.py
index 7c8f71ea9a..09ec02f158 100644
--- a/InvenTree/InvenTree/api.py
+++ b/InvenTree/InvenTree/api.py
@@ -6,6 +6,7 @@ Main JSON interface views
 from __future__ import unicode_literals
 
 from django.utils.translation import ugettext_lazy as _
+from django.conf import settings
 from django.http import JsonResponse
 
 from django_filters.rest_framework import DjangoFilterBackend
@@ -37,6 +38,7 @@ class InfoView(AjaxView):
             'instance': inventreeInstanceName(),
             'apiVersion': inventreeApiVersion(),
             'worker_running': is_worker_running(),
+            'plugins_enabled': settings.PLUGINS_ENABLED,
         }
 
         return JsonResponse(data)
diff --git a/InvenTree/InvenTree/version.py b/InvenTree/InvenTree/version.py
index 6d4848f436..f97f134e4a 100644
--- a/InvenTree/InvenTree/version.py
+++ b/InvenTree/InvenTree/version.py
@@ -12,11 +12,17 @@ import common.models
 INVENTREE_SW_VERSION = "0.7.0 dev"
 
 # InvenTree API version
-INVENTREE_API_VERSION = 32
+INVENTREE_API_VERSION = 34
 
 """
 Increment this API version number whenever there is a significant change to the API that any clients need to know about
 
+v34 -> 2022-03-25
+    - Change permissions for "plugin list" API endpoint (now allows any authenticated user)
+
+v33 -> 2022-03-24
+    - Adds "plugins_enabled" information to root API endpoint
+
 v32 -> 2022-03-19
     - Adds "parameters" detail to Part API endpoint (use &parameters=true)
     - Adds ability to filter PartParameterTemplate API by Part instance
diff --git a/InvenTree/build/templates/build/detail.html b/InvenTree/build/templates/build/detail.html
index 21bddfd6ca..0ed3c01f7e 100644
--- a/InvenTree/build/templates/build/detail.html
+++ b/InvenTree/build/templates/build/detail.html
@@ -258,6 +258,19 @@
                             </a></li>
                         </ul>
                     </div>
+
+                    <!-- Label Printing Actions -->
+                    <div class='btn-group'>
+                        <button id='output-print-options' class='btn btn-primary dropdown-toggle' type='button' data-bs-toggle='dropdown' title='{% trans "Printing Actions" %}'>
+                            <span class='fas fa-print'></span> <span class='caret'></span>
+                        </button>
+                        <ul class='dropdown-menu'>
+                            <li><a class='dropdown-item' href='#' id='incomplete-output-print-label' title='{% trans "Print labels" %}'>
+                                <span class='fas fa-tags'></span> {% trans "Print labels" %}
+                            </a></li>
+                        </ul>
+                    </div>
+
                     {% include "filter_list.html" with id='incompletebuilditems' %}
                 </div>
                 {% endif %}
@@ -468,6 +481,23 @@ inventreeGet(
                 )
             });
 
+            $('#incomplete-output-print-label').click(function() {
+                var outputs = $('#build-output-table').bootstrapTable('getSelections');
+
+                if  (outputs.length == 0) {
+                    outputs = $('#build-output-table').bootstrapTable('getData');
+                }
+
+                var stock_id_values = [];
+
+                outputs.forEach(function(output) {
+                    stock_id_values.push(output.pk);
+                });
+
+                printStockItemLabels(stock_id_values);
+
+            });
+
             {% endif %}
         
             {% if build.active and build.has_untracked_bom_items %}
diff --git a/InvenTree/common/models.py b/InvenTree/common/models.py
index 1a9b6f37d4..ad144cd8db 100644
--- a/InvenTree/common/models.py
+++ b/InvenTree/common/models.py
@@ -79,7 +79,7 @@ class BaseInvenTreeSetting(models.Model):
         self.key = str(self.key).upper()
 
         self.clean(**kwargs)
-        self.validate_unique()
+        self.validate_unique(**kwargs)
 
         super().save()
 
@@ -230,10 +230,6 @@ class BaseInvenTreeSetting(models.Model):
 
         return choices
 
-    @classmethod
-    def get_filters(cls, key, **kwargs):
-        return {'key__iexact': key}
-
     @classmethod
     def get_setting_object(cls, key, **kwargs):
         """
@@ -247,29 +243,35 @@ class BaseInvenTreeSetting(models.Model):
 
         settings = cls.objects.all()
 
+        filters = {
+            'key__iexact': key,
+        }
+
         # Filter by user
         user = kwargs.get('user', None)
 
         if user is not None:
-            settings = settings.filter(user=user)
+            filters['user'] = user
 
-        try:
-            setting = settings.filter(**cls.get_filters(key, **kwargs)).first()
-        except (ValueError, cls.DoesNotExist):
-            setting = None
-        except (IntegrityError, OperationalError):
-            setting = None
+        # Filter by plugin
+        plugin = kwargs.get('plugin', None)
 
-        plugin = kwargs.pop('plugin', None)
-
-        if plugin:
+        if plugin is not None:
             from plugin import InvenTreePluginBase
 
             if issubclass(plugin.__class__, InvenTreePluginBase):
                 plugin = plugin.plugin_config()
 
+            filters['plugin'] = plugin
             kwargs['plugin'] = plugin
 
+        try:
+            setting = settings.filter(**filters).first()
+        except (ValueError, cls.DoesNotExist):
+            setting = None
+        except (IntegrityError, OperationalError):
+            setting = None
+
         # Setting does not exist! (Try to create it)
         if not setting:
 
@@ -287,7 +289,7 @@ class BaseInvenTreeSetting(models.Model):
                 try:
                     # Wrap this statement in "atomic", so it can be rolled back if it fails
                     with transaction.atomic():
-                        setting.save()
+                        setting.save(**kwargs)
                 except (IntegrityError, OperationalError):
                     # It might be the case that the database isn't created yet
                     pass
@@ -342,8 +344,26 @@ class BaseInvenTreeSetting(models.Model):
         if change_user is not None and not change_user.is_staff:
             return
 
+        filters = {
+            'key__iexact': key,
+        }
+
+        user = kwargs.get('user', None)
+        plugin = kwargs.get('plugin', None)
+
+        if user is not None:
+            filters['user'] = user
+
+        if plugin is not None:
+            from plugin import InvenTreePluginBase
+
+            if issubclass(plugin.__class__, InvenTreePluginBase):
+                filters['plugin'] = plugin.plugin_config()
+            else:
+                filters['plugin'] = plugin
+
         try:
-            setting = cls.objects.get(**cls.get_filters(key, **kwargs))
+            setting = cls.objects.get(**filters)
         except cls.DoesNotExist:
 
             if create:
@@ -438,17 +458,37 @@ class BaseInvenTreeSetting(models.Model):
             validator(self.value)
 
     def validate_unique(self, exclude=None, **kwargs):
-        """ Ensure that the key:value pair is unique.
+        """
+        Ensure that the key:value pair is unique.
         In addition to the base validators, this ensures that the 'key'
         is unique, using a case-insensitive comparison.
+
+        Note that sub-classes (UserSetting, PluginSetting) use other filters
+        to determine if the setting is 'unique' or not
         """
 
         super().validate_unique(exclude)
 
+        filters = {
+            'key__iexact': self.key,
+        }
+
+        user = getattr(self, 'user', None)
+        plugin = getattr(self, 'plugin', None)
+
+        if user is not None:
+            filters['user'] = user
+
+        if plugin is not None:
+            filters['plugin'] = plugin
+
         try:
-            setting = self.__class__.objects.exclude(id=self.id).filter(**self.get_filters(self.key, **kwargs))
+            # Check if a duplicate setting already exists
+            setting = self.__class__.objects.filter(**filters).exclude(id=self.id)
+
             if setting.exists():
                 raise ValidationError({'key': _('Key string must be unique')})
+
         except self.DoesNotExist:
             pass
 
@@ -1200,6 +1240,13 @@ class InvenTreeUserSetting(BaseInvenTreeSetting):
             'validator': bool,
         },
 
+        'NOTIFICATION_SEND_EMAILS': {
+            'name': _('Enable email notifications'),
+            'description': _('Allow sending of emails for event notifications'),
+            'default': True,
+            'validator': bool,
+        },
+
         "LABEL_INLINE": {
             'name': _('Inline label display'),
             'description': _('Display PDF labels in the browser, instead of downloading as a file'),
@@ -1305,16 +1352,9 @@ class InvenTreeUserSetting(BaseInvenTreeSetting):
     def get_setting_object(cls, key, user):
         return super().get_setting_object(key, user=user)
 
-    def validate_unique(self, exclude=None):
+    def validate_unique(self, exclude=None, **kwargs):
         return super().validate_unique(exclude=exclude, user=self.user)
 
-    @classmethod
-    def get_filters(cls, key, **kwargs):
-        return {
-            'key__iexact': key,
-            'user__id': kwargs['user'].id
-        }
-
     def to_native_value(self):
         """
         Return the "pythonic" value,
diff --git a/InvenTree/common/notifications.py b/InvenTree/common/notifications.py
index 6ba7b6d659..fe737fc919 100644
--- a/InvenTree/common/notifications.py
+++ b/InvenTree/common/notifications.py
@@ -8,15 +8,19 @@ from allauth.account.models import EmailAddress
 from InvenTree.helpers import inheritors
 from InvenTree.ready import isImportingData
 from common.models import NotificationEntry, NotificationMessage
+from common.models import InvenTreeUserSetting
+
 import InvenTree.tasks
 
 
 logger = logging.getLogger('inventree')
 
 
-# region notification classes
-# region base classes
 class NotificationMethod:
+    """
+    Base class for notification methods
+    """
+
     METHOD_NAME = ''
     CONTEXT_BUILTIN = ['name', 'message', ]
     CONTEXT_EXTRA = []
@@ -95,10 +99,8 @@ class SingleNotificationMethod(NotificationMethod):
 class BulkNotificationMethod(NotificationMethod):
     def send_bulk(self):
         raise NotImplementedError('The `send` method must be overriden!')
-# endregion
 
 
-# region implementations
 class EmailNotification(BulkNotificationMethod):
     METHOD_NAME = 'mail'
     CONTEXT_EXTRA = [
@@ -108,13 +110,26 @@ class EmailNotification(BulkNotificationMethod):
     ]
 
     def get_targets(self):
+        """
+        Return a list of target email addresses,
+        only for users which allow email notifications
+        """
+
+        allowed_users = []
+
+        for user in self.targets:
+            allows_emails = InvenTreeUserSetting.get_setting('NOTIFICATION_SEND_EMAILS', user=user)
+
+            if allows_emails:
+                allowed_users.append(user)
+
         return EmailAddress.objects.filter(
-            user__in=self.targets,
+            user__in=allowed_users,
         )
 
     def send_bulk(self):
         html_message = render_to_string(self.context['template']['html'], self.context)
-        targets = self.targets.values_list('email', flat=True)
+        targets = self.get_targets().values_list('email', flat=True)
 
         InvenTree.tasks.send_email(self.context['template']['subject'], '', targets, html_message=html_message)
 
@@ -137,20 +152,27 @@ class UIMessageNotification(SingleNotificationMethod):
             message=self.context['message'],
         )
         return True
-# endregion
-# endregion
 
 
-def trigger_notifaction(obj, category=None, obj_ref='pk', targets=None, target_fnc=None, target_args=[], target_kwargs={}, context={}):
+def trigger_notifaction(obj, category=None, obj_ref='pk', **kwargs):
     """
-    Send out an notification
+    Send out a notification
     """
-    # check if data is importet currently
+
+    targets = kwargs.get('targets', None)
+    target_fnc = kwargs.get('target_fnc', None)
+    target_args = kwargs.get('target_args', [])
+    target_kwargs = kwargs.get('target_kwargs', {})
+    context = kwargs.get('context', {})
+    delivery_methods = kwargs.get('delivery_methods', None)
+
+    # Check if data is importing currently
     if isImportingData():
         return
 
     # Resolve objekt reference
     obj_ref_value = getattr(obj, obj_ref)
+
     # Try with some defaults
     if not obj_ref_value:
         obj_ref_value = getattr(obj, 'pk')
@@ -175,7 +197,8 @@ def trigger_notifaction(obj, category=None, obj_ref='pk', targets=None, target_f
         logger.info(f"Sending notification '{category}' for '{str(obj)}'")
 
         # Collect possible methods
-        delivery_methods = inheritors(NotificationMethod)
+        if delivery_methods is None:
+            delivery_methods = inheritors(NotificationMethod)
 
         for method in [a for a in delivery_methods if a not in [SingleNotificationMethod, BulkNotificationMethod]]:
             logger.info(f"Triggering method '{method.METHOD_NAME}'")
diff --git a/InvenTree/label/api.py b/InvenTree/label/api.py
index 475d4f8fea..5103d99676 100644
--- a/InvenTree/label/api.py
+++ b/InvenTree/label/api.py
@@ -1,10 +1,15 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+from io import BytesIO
+from PIL import Image
+
 from django.utils.translation import ugettext_lazy as _
+
+from django.conf import settings
 from django.conf.urls import url, include
 from django.core.exceptions import ValidationError, FieldError
-from django.http import HttpResponse
+from django.http import HttpResponse, JsonResponse
 
 from django_filters.rest_framework import DjangoFilterBackend
 
@@ -12,8 +17,11 @@ from rest_framework import generics, filters
 from rest_framework.response import Response
 
 import InvenTree.helpers
+from InvenTree.tasks import offload_task
 import common.models
 
+from plugin.registry import registry
+
 from stock.models import StockItem, StockLocation
 from part.models import Part
 
@@ -46,11 +54,43 @@ class LabelPrintMixin:
     Mixin for printing labels
     """
 
+    def get_plugin(self, request):
+        """
+        Return the label printing plugin associated with this request.
+        This is provided in the url, e.g. ?plugin=myprinter
+
+        Requires:
+        - settings.PLUGINS_ENABLED is True
+        - matching plugin can be found
+        - matching plugin implements the 'labels' mixin
+        - matching plugin is enabled
+        """
+
+        if not settings.PLUGINS_ENABLED:
+            return None
+
+        plugin_key = request.query_params.get('plugin', None)
+
+        for slug, plugin in registry.plugins.items():
+
+            if slug == plugin_key and plugin.mixin_enabled('labels'):
+
+                config = plugin.plugin_config()
+
+                if config and config.active:
+                    # Only return the plugin if it is enabled!
+                    return plugin
+
+        # No matches found
+        return None
+
     def print(self, request, items_to_print):
         """
         Print this label template against a number of pre-validated items
         """
 
+        # Check the request to determine if the user has selected a label printing plugin
+        plugin = self.get_plugin(request)
         if len(items_to_print) == 0:
             # No valid items provided, return an error message
             data = {
@@ -66,6 +106,8 @@ class LabelPrintMixin:
 
         label_name = "label.pdf"
 
+        label_names = []
+
         # Merge one or more PDF files into a single download
         for item in items_to_print:
             label = self.get_object()
@@ -73,6 +115,8 @@ class LabelPrintMixin:
 
             label_name = label.generate_filename(request)
 
+            label_names.append(label_name)
+
             if debug_mode:
                 outputs.append(label.render_as_string(request))
             else:
@@ -81,7 +125,51 @@ class LabelPrintMixin:
         if not label_name.endswith(".pdf"):
             label_name += ".pdf"
 
-        if debug_mode:
+        if plugin is not None:
+            """
+            Label printing is to be handled by a plugin,
+            rather than being exported to PDF.
+
+            In this case, we do the following:
+
+            - Individually generate each label, exporting as an image file
+            - Pass all the images through to the label printing plugin
+            - Return a JSON response indicating that the printing has been offloaded
+
+            """
+
+            # Label instance
+            label_instance = self.get_object()
+
+            for output in outputs:
+                """
+                For each output, we generate a temporary image file,
+                which will then get sent to the printer
+                """
+
+                # Generate a png image at 300dpi
+                (img_data, w, h) = output.get_document().write_png(resolution=300)
+
+                # Construct a BytesIO object, which can be read by pillow
+                img_bytes = BytesIO(img_data)
+
+                image = Image.open(img_bytes)
+
+                # Offload a background task to print the provided label
+                offload_task(
+                    'plugin.events.print_label',
+                    plugin.plugin_slug(),
+                    image,
+                    label_instance=label_instance,
+                    user=request.user,
+                )
+
+            return JsonResponse({
+                'plugin': plugin.plugin_slug(),
+                'labels': label_names,
+            })
+
+        elif debug_mode:
             """
             Contatenate all rendered templates into a single HTML string,
             and return the string as a HTML response.
@@ -90,6 +178,7 @@ class LabelPrintMixin:
             html = "\n".join(outputs)
 
             return HttpResponse(html)
+
         else:
             """
             Concatenate all rendered pages into a single PDF object,
diff --git a/InvenTree/label/templates/label/label_base.html b/InvenTree/label/templates/label/label_base.html
index 2986c8a439..363a7d3144 100644
--- a/InvenTree/label/templates/label/label_base.html
+++ b/InvenTree/label/templates/label/label_base.html
@@ -13,6 +13,8 @@
         body {
             font-family: Arial, Helvetica, sans-serif;
             margin: 0mm;
+            color: #000;
+            background-color: #FFF;
         }
 
         img {
diff --git a/InvenTree/part/tasks.py b/InvenTree/part/tasks.py
index 9bc34f83df..b5e02e1128 100644
--- a/InvenTree/part/tasks.py
+++ b/InvenTree/part/tasks.py
@@ -5,7 +5,6 @@ import logging
 
 from django.utils.translation import ugettext_lazy as _
 
-
 import InvenTree.helpers
 import InvenTree.tasks
 import common.notifications
diff --git a/InvenTree/part/templatetags/inventree_extras.py b/InvenTree/part/templatetags/inventree_extras.py
index 3deab1ecd1..dc93e00efa 100644
--- a/InvenTree/part/templatetags/inventree_extras.py
+++ b/InvenTree/part/templatetags/inventree_extras.py
@@ -8,6 +8,7 @@ over and above the built-in Django tags.
 from datetime import date, datetime
 import os
 import sys
+import logging
 
 from django.utils.html import format_html
 
@@ -31,6 +32,9 @@ from plugin.models import PluginSetting
 register = template.Library()
 
 
+logger = logging.getLogger('inventree')
+
+
 @register.simple_tag()
 def define(value, *args, **kwargs):
     """
@@ -57,8 +61,19 @@ def render_date(context, date_object):
         return None
 
     if type(date_object) == str:
+
+        date_object = date_object.strip()
+
+        # Check for empty string
+        if len(date_object) == 0:
+            return None
+
         # If a string is passed, first convert it to a datetime
-        date_object = date.fromisoformat(date_object)
+        try:
+            date_object = date.fromisoformat(date_object)
+        except ValueError:
+            logger.warning(f"Tried to convert invalid date string: {date_object}")
+            return None
 
     # We may have already pre-cached the date format by calling this already!
     user_date_format = context.get('user_date_format', None)
diff --git a/InvenTree/plugin/api.py b/InvenTree/plugin/api.py
index 9ab3b96724..5a4ea7bae3 100644
--- a/InvenTree/plugin/api.py
+++ b/InvenTree/plugin/api.py
@@ -9,6 +9,7 @@ from django.conf.urls import url, include
 
 from rest_framework import generics
 from rest_framework import status
+from rest_framework import permissions
 from rest_framework.response import Response
 
 from common.api import GlobalSettingsPermissions
@@ -22,6 +23,11 @@ class PluginList(generics.ListAPIView):
     - GET: Return a list of all PluginConfig objects
     """
 
+    # Allow any logged in user to read this endpoint
+    # This is necessary to allow certain functionality,
+    # e.g. determining which label printing plugins are available
+    permission_classes = [permissions.IsAuthenticated]
+
     serializer_class = PluginSerializers.PluginConfigSerializer
     queryset = PluginConfig.objects.all()
 
diff --git a/InvenTree/plugin/builtin/integration/mixins.py b/InvenTree/plugin/builtin/integration/mixins.py
index 1e6b7e38b7..118f0b775b 100644
--- a/InvenTree/plugin/builtin/integration/mixins.py
+++ b/InvenTree/plugin/builtin/integration/mixins.py
@@ -393,6 +393,42 @@ class AppMixin:
         return True
 
 
+class LabelPrintingMixin:
+    """
+    Mixin which enables direct printing of stock labels.
+
+    Each plugin must provide a PLUGIN_NAME attribute, which is used to uniquely identify the printer.
+
+    The plugin must also implement the print_label() function
+    """
+
+    class MixinMeta:
+        """
+        Meta options for this mixin
+        """
+        MIXIN_NAME = 'Label printing'
+
+    def __init__(self):
+        super().__init__()
+        self.add_mixin('labels', True, __class__)
+
+    def print_label(self, label, **kwargs):
+        """
+        Callback to print a single label
+
+        Arguments:
+            label: A black-and-white pillow Image object
+
+        kwargs:
+            length: The length of the label (in mm)
+            width: The width of the label (in mm)
+
+        """
+
+        # Unimplemented (to be implemented by the particular plugin class)
+        ...
+
+
 class APICallMixin:
     """
     Mixin that enables easier API calls for a plugin
diff --git a/InvenTree/plugin/events.py b/InvenTree/plugin/events.py
index 049c8626c5..b510b42683 100644
--- a/InvenTree/plugin/events.py
+++ b/InvenTree/plugin/events.py
@@ -7,12 +7,15 @@ from __future__ import unicode_literals
 
 import logging
 
+from django.utils.translation import ugettext_lazy as _
+
 from django.conf import settings
 from django.db import transaction
 from django.db.models.signals import post_save, post_delete
 from django.dispatch.dispatcher import receiver
 
 from common.models import InvenTreeSetting
+import common.notifications
 
 from InvenTree.ready import canAppAccessDatabase
 from InvenTree.tasks import offload_task
@@ -95,7 +98,11 @@ def process_event(plugin_slug, event, *args, **kwargs):
 
     logger.info(f"Plugin '{plugin_slug}' is processing triggered event '{event}'")
 
-    plugin = registry.plugins[plugin_slug]
+    plugin = registry.plugins.get(plugin_slug, None)
+
+    if plugin is None:
+        logger.error(f"Could not find matching plugin for '{plugin_slug}'")
+        return
 
     plugin.process_event(event, *args, **kwargs)
 
@@ -186,3 +193,46 @@ def after_delete(sender, instance, **kwargs):
         model=sender.__name__,
         table=table,
     )
+
+
+def print_label(plugin_slug, label_image, label_instance=None, user=None):
+    """
+    Print label with the provided plugin.
+
+    This task is nominally handled by the background worker.
+
+    If the printing fails (throws an exception) then the user is notified.
+
+    Arguments:
+        plugin_slug: The unique slug (key) of the plugin
+        label_image: A PIL.Image image object to be printed
+    """
+
+    logger.info(f"Plugin '{plugin_slug}' is printing a label")
+
+    plugin = registry.plugins.get(plugin_slug, None)
+
+    if plugin is None:
+        logger.error(f"Could not find matching plugin for '{plugin_slug}'")
+        return
+
+    try:
+        plugin.print_label(label_image, width=label_instance.width, height=label_instance.height)
+    except Exception as e:
+        # Plugin threw an error - notify the user who attempted to print
+
+        ctx = {
+            'name': _('Label printing failed'),
+            'message': str(e),
+        }
+
+        logger.error(f"Label printing failed: Sending notification to user '{user}'")
+
+        # Throw an error against the plugin instance
+        common.notifications.trigger_notifaction(
+            plugin.plugin_config(),
+            'label.printing_failed',
+            targets=[user],
+            context=ctx,
+            delivery_methods=[common.notifications.UIMessageNotification]
+        )
diff --git a/InvenTree/plugin/mixins/__init__.py b/InvenTree/plugin/mixins/__init__.py
index 8097b0b459..86e5e92f37 100644
--- a/InvenTree/plugin/mixins/__init__.py
+++ b/InvenTree/plugin/mixins/__init__.py
@@ -2,7 +2,8 @@
 Utility class to enable simpler imports
 """
 
-from ..builtin.integration.mixins import APICallMixin, AppMixin, SettingsMixin, EventMixin, ScheduleMixin, UrlsMixin, NavigationMixin
+from ..builtin.integration.mixins import APICallMixin, AppMixin, LabelPrintingMixin, SettingsMixin, EventMixin, ScheduleMixin, UrlsMixin, NavigationMixin
+
 from ..builtin.action.mixins import ActionMixin
 from ..builtin.barcode.mixins import BarcodeMixin
 
@@ -10,6 +11,7 @@ __all__ = [
     'APICallMixin',
     'AppMixin',
     'EventMixin',
+    'LabelPrintingMixin',
     'NavigationMixin',
     'ScheduleMixin',
     'SettingsMixin',
diff --git a/InvenTree/plugin/models.py b/InvenTree/plugin/models.py
index e33d452e0a..44eeafd012 100644
--- a/InvenTree/plugin/models.py
+++ b/InvenTree/plugin/models.py
@@ -175,23 +175,6 @@ class PluginSetting(common.models.BaseInvenTreeSetting):
 
         return super().get_setting_definition(key, **kwargs)
 
-    @classmethod
-    def get_filters(cls, key, **kwargs):
-        """
-        Override filters method to ensure settings are filtered by plugin id
-        """
-
-        filters = super().get_filters(key, **kwargs)
-
-        plugin = kwargs.get('plugin', None)
-
-        if plugin:
-            if issubclass(plugin.__class__, InvenTreePluginBase):
-                plugin = plugin.plugin_config()
-            filters['plugin'] = plugin
-
-        return filters
-
     plugin = models.ForeignKey(
         PluginConfig,
         related_name='settings',
diff --git a/InvenTree/plugin/registry.py b/InvenTree/plugin/registry.py
index 2db1beb805..3276c82f45 100644
--- a/InvenTree/plugin/registry.py
+++ b/InvenTree/plugin/registry.py
@@ -10,12 +10,13 @@ import pathlib
 import logging
 import os
 import subprocess
+
 from typing import OrderedDict
 from importlib import reload
 
 from django.apps import apps
 from django.conf import settings
-from django.db.utils import OperationalError, ProgrammingError
+from django.db.utils import OperationalError, ProgrammingError, IntegrityError
 from django.conf.urls import url, include
 from django.urls import clear_url_caches
 from django.contrib import admin
@@ -282,6 +283,8 @@ class PluginsRegistry:
                 if not settings.PLUGIN_TESTING:
                     raise error  # pragma: no cover
                 plugin_db_setting = None
+            except (IntegrityError) as error:
+                logger.error(f"Error initializing plugin: {error}")
 
             # Always activate if testing
             if settings.PLUGIN_TESTING or (plugin_db_setting and plugin_db_setting.active):
diff --git a/InvenTree/templates/InvenTree/notifications/inbox.html b/InvenTree/templates/InvenTree/notifications/inbox.html
index 7ec2a27b6a..d8f5190860 100644
--- a/InvenTree/templates/InvenTree/notifications/inbox.html
+++ b/InvenTree/templates/InvenTree/notifications/inbox.html
@@ -10,7 +10,7 @@
 {% endblock %}
 
 {% block actions %}
-<div class='btn btn-secondary' type='button' id='mark-all' title='{% trans "Mark all as read" %}'>
+<div class='btn btn-outline-secondary' type='button' id='mark-all' title='{% trans "Mark all as read" %}'>
     <span class='fa fa-bookmark'></span> {% trans "Mark all as read" %}
 </div>
 <div class='btn btn-secondary' type='button' id='inbox-refresh' title='{% trans "Refresh Pending Notifications" %}'>
diff --git a/InvenTree/templates/InvenTree/notifications/notifications.html b/InvenTree/templates/InvenTree/notifications/notifications.html
index 89f10c3e3d..fedf8a1448 100644
--- a/InvenTree/templates/InvenTree/notifications/notifications.html
+++ b/InvenTree/templates/InvenTree/notifications/notifications.html
@@ -126,8 +126,12 @@ $("#mark-all").on('click', function() {
         {
             read: false,
         },
+        {
+            success: function(response) {
+                updateNotificationTables();
+            }
+        }
     );
-    updateNotificationTables();
 });
 
 loadNotificationTable("#history-table", {
diff --git a/InvenTree/templates/InvenTree/settings/settings.html b/InvenTree/templates/InvenTree/settings/settings.html
index ba27187747..dbb526cfd3 100644
--- a/InvenTree/templates/InvenTree/settings/settings.html
+++ b/InvenTree/templates/InvenTree/settings/settings.html
@@ -22,6 +22,7 @@
 {% include "InvenTree/settings/user_settings.html" %}
 {% include "InvenTree/settings/user_homepage.html" %}
 {% include "InvenTree/settings/user_search.html" %}
+{% include "InvenTree/settings/user_notifications.html" %}
 {% include "InvenTree/settings/user_labels.html" %}
 {% include "InvenTree/settings/user_reports.html" %}
 {% include "InvenTree/settings/user_display.html" %}
diff --git a/InvenTree/templates/InvenTree/settings/sidebar.html b/InvenTree/templates/InvenTree/settings/sidebar.html
index 85e0b4ce94..9df6b0736f 100644
--- a/InvenTree/templates/InvenTree/settings/sidebar.html
+++ b/InvenTree/templates/InvenTree/settings/sidebar.html
@@ -14,6 +14,8 @@
 {% include "sidebar_item.html" with label='user-home' text=text icon="fa-home" %}
 {% trans "Search Settings" as text %}
 {% include "sidebar_item.html" with label='user-search' text=text icon="fa-search" %}
+{% trans "Notifications" as text %}
+{% include "sidebar_item.html" with label='user-notifications' text=text icon="fa-bell" %}
 {% trans "Label Printing" as text %}
 {% include "sidebar_item.html" with label='user-labels' text=text icon="fa-tag" %}
 {% trans "Reporting" as text %}
diff --git a/InvenTree/templates/InvenTree/settings/user_notifications.html b/InvenTree/templates/InvenTree/settings/user_notifications.html
new file mode 100644
index 0000000000..4e9889ca69
--- /dev/null
+++ b/InvenTree/templates/InvenTree/settings/user_notifications.html
@@ -0,0 +1,20 @@
+{% extends "panel.html" %}
+
+{% load i18n %}
+{% load inventree_extras %}
+
+{% block label %}user-notifications{% endblock label %}
+
+{% block heading %}{% trans "Notification Settings" %}{% endblock heading %}
+
+{% block content %}
+
+<div class='row'>
+    <table class='table table-striped table-condensed'>
+        <tbody>
+            {% include "InvenTree/settings/setting.html" with key="NOTIFICATION_SEND_EMAILS" icon='fa-envelope' user_setting=True %}
+        </tbody>
+    </table>
+</div>
+
+{% endblock content %}
\ No newline at end of file
diff --git a/InvenTree/templates/js/translated/build.js b/InvenTree/templates/js/translated/build.js
index 5b416b4d22..201d3c5c9f 100644
--- a/InvenTree/templates/js/translated/build.js
+++ b/InvenTree/templates/js/translated/build.js
@@ -213,7 +213,7 @@ function createBuildOutput(build_id, options) {
                     success: function(data) {
                         if (data.next) {
                             fields.serial_numbers.placeholder = `{% trans "Next available serial number" %}: ${data.next}`;
-                        } else {
+                        } else if (data.latest) {
                             fields.serial_numbers.placeholder = `{% trans "Latest serial number" %}: ${data.latest}`;
                         }
                     },
@@ -1025,9 +1025,10 @@ function loadBuildOutputAllocationTable(buildInfo, output, options={}) {
         }
 
         // Store the required quantity in the row data
-        row.required = quantity;
+        // Prevent weird rounding issues
+        row.required = parseFloat(quantity.toFixed(15));
 
-        return quantity;
+        return row.required;
     }
 
     function sumAllocations(row) {
@@ -1043,9 +1044,9 @@ function loadBuildOutputAllocationTable(buildInfo, output, options={}) {
             quantity += item.quantity;
         });
 
-        row.allocated = quantity;
+        row.allocated = parseFloat(quantity.toFixed(15));
 
-        return quantity;
+        return row.allocated;
     }
 
     function setupCallbacks() {
@@ -1642,6 +1643,9 @@ function allocateStockToBuild(build_id, part_id, bom_items, options={}) {
             remaining = 0;
         }
 
+        // Ensure the quantity sent to the form field is correctly formatted
+        remaining = parseFloat(remaining.toFixed(15));
+
         // We only care about entries which are not yet fully allocated
         if (remaining > 0) {
             table_entries += renderBomItemRow(bom_item, remaining);
diff --git a/InvenTree/templates/js/translated/label.js b/InvenTree/templates/js/translated/label.js
index 1c843917e6..c0f4c2f735 100644
--- a/InvenTree/templates/js/translated/label.js
+++ b/InvenTree/templates/js/translated/label.js
@@ -14,11 +14,41 @@
 */
 
 /* exported
+    printLabels,
     printPartLabels,
     printStockItemLabels,
     printStockLocationLabels,
 */
 
+
+/*
+ * Perform the "print" action.
+ */
+function printLabels(url, plugin=null) {
+
+    if (plugin) {
+        // If a plugin is provided, do not redirect the browser.
+        // Instead, perform an API request and display a message
+
+        url = url + `plugin=${plugin}`;
+
+        inventreeGet(url, {}, {
+            success: function(response) {
+                showMessage(
+                    '{% trans "Labels sent to printer" %}',
+                    {
+                        style: 'success',
+                    }
+                );
+            }
+        });
+    } else {
+        window.location.href = url;
+    }
+
+}
+
+
 function printStockItemLabels(items) {
     /**
      * Print stock item labels for the given stock items
@@ -57,14 +87,17 @@ function printStockItemLabels(items) {
                     response,
                     items,
                     {
-                        success: function(pk) {
+                        success: function(data) {
+
+                            var pk = data.label;
+
                             var href = `/api/label/stock/${pk}/print/?`;
 
                             items.forEach(function(item) {
                                 href += `items[]=${item}&`;
                             });
 
-                            window.location.href = href;
+                            printLabels(href, data.plugin);
                         }
                     }
                 );
@@ -73,6 +106,7 @@ function printStockItemLabels(items) {
     );
 }
 
+
 function printStockLocationLabels(locations) {
 
     if (locations.length == 0) {
@@ -107,14 +141,17 @@ function printStockLocationLabels(locations) {
                     response,
                     locations,
                     {
-                        success: function(pk) {
+                        success: function(data) {
+
+                            var pk = data.label;
+
                             var href = `/api/label/location/${pk}/print/?`;
 
                             locations.forEach(function(location) {
                                 href += `locations[]=${location}&`;
                             });
 
-                            window.location.href = href;
+                            printLabels(href, data.plugin);
                         }
                     }
                 );
@@ -162,14 +199,17 @@ function printPartLabels(parts) {
                     response,
                     parts,
                     {
-                        success: function(pk) {
-                            var url = `/api/label/part/${pk}/print/?`;
+                        success: function(data) {
+
+                            var pk = data.label;
+
+                            var href = `/api/label/part/${pk}/print/?`;
 
                             parts.forEach(function(part) {
-                                url += `parts[]=${part}&`;
+                                href += `parts[]=${part}&`;
                             });
 
-                            window.location.href = url;
+                            printLabels(href, data.plugin);
                         }
                     }
                 );
@@ -188,18 +228,51 @@ function selectLabel(labels, items, options={}) {
      * (via AJAX) from the server.
      */
 
-    // If only a single label template is provided,
-    // just run with that!
+    // Array of available plugins for label printing
+    var plugins = [];
 
-    if (labels.length == 1) {
-        if (options.success) {
-            options.success(labels[0].pk);
+    // Request a list of available label printing plugins from the server
+    inventreeGet(
+        `/api/plugin/`,
+        {},
+        {
+            async: false,
+            success: function(response) {
+                response.forEach(function(plugin) {
+                    // Look for active plugins which implement the 'labels' mixin class
+                    if (plugin.active && plugin.mixins && plugin.mixins.labels) {
+                        // This plugin supports label printing
+                        plugins.push(plugin);
+                    }
+                });
+            }
         }
+    );
 
-        return;
+    var plugin_selection = '';
+    
+    if (plugins.length > 0) {
+        plugin_selection =`
+        <div class='form-group'>
+            <label class='control-label requiredField' for='id_plugin'>
+            {% trans "Select Printer" %}
+            </label>
+            <div class='controls'>
+                <select id='id_plugin' class='select form-control' name='plugin'>
+                    <option value='' title='{% trans "Export to PDF" %}'>{% trans "Export to PDF" %}</option>
+        `;
+
+        plugins.forEach(function(plugin) {
+            plugin_selection += `<option value='${plugin.key}' title='${plugin.meta.human_name}'>${plugin.name} - <small>${plugin.meta.human_name}</small></option>`;
+        });
+
+        plugin_selection += `
+                    </select>
+                </div>
+            </div>
+        `;
     }
 
-
     var modal = options.modal || '#modal-form';
 
     var label_list = makeOptionsList(
@@ -233,14 +306,15 @@ function selectLabel(labels, items, options={}) {
     <form method='post' action='' class='js-modal-form' enctype='multipart/form-data'>
         <div class='form-group'>
             <label class='control-label requiredField' for='id_label'>
-            {% trans "Select Label" %}
+            {% trans "Select Label Template" %}
             </label>
             <div class='controls'>
-                <select id='id_label' class='select form-control name='label'>
+                <select id='id_label' class='select form-control' name='label'>
                     ${label_list}
                 </select>
             </div>
         </div>
+        ${plugin_selection}
     </form>`;
 
     openModal({
@@ -255,14 +329,17 @@ function selectLabel(labels, items, options={}) {
 
     modalSubmit(modal, function() {
 
-        var label = $(modal).find('#id_label');
-
-        var pk = label.val();
+        var label = $(modal).find('#id_label').val();
+        var plugin = $(modal).find('#id_plugin').val();
 
         closeModal(modal);
 
         if (options.success) {
-            options.success(pk);
+            options.success({
+                // Return the selected label template and plugin
+                label: label,
+                plugin: plugin,
+            });
         }
     });
 }
diff --git a/InvenTree/templates/js/translated/notification.js b/InvenTree/templates/js/translated/notification.js
index 4da4c2e875..a289dcb8f7 100644
--- a/InvenTree/templates/js/translated/notification.js
+++ b/InvenTree/templates/js/translated/notification.js
@@ -253,7 +253,7 @@ function openNotificationPanel() {
         {
             success: function(response) {
                 if (response.length == 0) {
-                    html = `<p class='text-muted'>{% trans "No unread notifications" %}</p>`;
+                    html = `<p class='text-muted'><em>{% trans "No unread notifications" %}</em><span class='fas fa-check-circle icon-green float-right'></span></p>`;
                 } else {
                     // build up items
                     response.forEach(function(item, index) {
diff --git a/InvenTree/templates/js/translated/stock.js b/InvenTree/templates/js/translated/stock.js
index b7f4162621..ade8bc5a0a 100644
--- a/InvenTree/templates/js/translated/stock.js
+++ b/InvenTree/templates/js/translated/stock.js
@@ -1770,6 +1770,7 @@ function loadStockTable(table, options) {
     col = {
         field: 'location_detail.pathstring',
         title: '{% trans "Location" %}',
+        sortName: 'location',
         formatter: function(value, row) {
             return locationDetail(row);
         }
@@ -1912,172 +1913,8 @@ function loadStockTable(table, options) {
         original: original,
         showColumns: true,
         columns: columns,
-        {% if False %}
-        groupByField: options.groupByField || 'part',
-        groupBy: grouping,
-        groupByFormatter: function(field, id, data) {
-
-            var row = data[0];
-
-            if (field == 'part_detail.full_name') {
-
-                var html = imageHoverIcon(row.part_detail.thumbnail);
-
-                html += row.part_detail.full_name;
-                html += ` <i>(${data.length} {% trans "items" %})</i>`;
-
-                html += makePartIcons(row.part_detail);
-
-                return html;
-            } else if (field == 'part_detail.IPN') {
-                var ipn = row.part_detail.IPN;
-
-                if (ipn) {
-                    return ipn;
-                } else {
-                    return '-';
-                }
-            } else if (field == 'part_detail.description') {
-                return row.part_detail.description;
-            } else if (field == 'packaging') {
-                var packaging = [];
-
-                data.forEach(function(item) {
-                    var pkg = item.packaging;
-
-                    if (!pkg) {
-                        pkg = '-';
-                    }
-
-                    if (!packaging.includes(pkg)) {
-                        packaging.push(pkg);
-                    }
-                });
-
-                if (packaging.length > 1) {
-                    return "...";
-                } else if (packaging.length == 1) {
-                    return packaging[0];
-                } else {
-                    return "-";
-                }
-            } else if (field == 'quantity') {
-                var stock = 0;
-                var items = 0;
-
-                data.forEach(function(item) {
-                    stock += parseFloat(item.quantity); 
-                    items += 1;
-                });
-
-                stock = +stock.toFixed(5);
-
-                return `${stock} (${items} {% trans "items" %})`;
-            } else if (field == 'status') {
-                var statii = [];
-
-                data.forEach(function(item) {
-                    var status = String(item.status);
-
-                    if (!status || status == '') {
-                        status = '-';
-                    }
-
-                    if (!statii.includes(status)) {
-                        statii.push(status);
-                    }
-                });
-
-                // Multiple status codes
-                if (statii.length > 1) {
-                    return "...";
-                } else if (statii.length == 1) {
-                    return stockStatusDisplay(statii[0]);
-                } else {
-                    return "-";
-                }
-            } else if (field == 'batch') {
-                var batches = [];
-
-                data.forEach(function(item) {
-                    var batch = item.batch;
-
-                    if (!batch || batch == '') {
-                        batch = '-';
-                    }
-
-                    if (!batches.includes(batch)) {
-                        batches.push(batch); 
-                    }
-                });
-
-                if (batches.length > 1) {
-                    return "" + batches.length + " {% trans 'batches' %}";
-                } else if (batches.length == 1) {
-                    if (batches[0]) {
-                        return batches[0];
-                    } else {
-                        return '-';
-                    }
-                } else {
-                    return '-';
-                }
-            } else if (field == 'location_detail.pathstring') {
-                /* Determine how many locations */
-                var locations = [];
-
-                data.forEach(function(item) {
-
-                    var detail = locationDetail(item);
-
-                    if (!locations.includes(detail)) {
-                        locations.push(detail);
-                    }
-                });
-
-                if (locations.length == 1) {
-                    // Single location, easy!
-                    return locations[0];
-                } else if (locations.length > 1) {
-                    return "In " + locations.length + " {% trans 'locations' %}";
-                } else {
-                    return "<i>{% trans 'Undefined location' %}</i>";
-                }
-            } else if (field == 'notes') {
-                var notes = [];
-
-                data.forEach(function(item) {
-                    var note = item.notes;
-
-                    if (!note || note == '') {
-                        note = '-';
-                    }
-
-                    if (!notes.includes(note)) {
-                        notes.push(note);
-                    }
-                });
-
-                if (notes.length > 1) {
-                    return '...';
-                } else if (notes.length == 1) {
-                    return notes[0] || '-';
-                } else {
-                    return '-';
-                }
-            } else {
-                return '';
-            }
-        },
-        {% endif %}
     });
 
-    /*
-    if (options.buttons) {
-        linkButtonsToSelection(table, options.buttons);
-    }
-    */
-
     var buttons = [
         '#stock-print-options',
         '#stock-options',
@@ -2092,7 +1929,6 @@ function loadStockTable(table, options) {
         buttons,
     );
 
-
     function stockAdjustment(action) {
         var items = $(table).bootstrapTable('getSelections');
 
diff --git a/docker/requirements.txt b/docker/requirements.txt
index cd27bdb5ce..192d6dac6f 100644
--- a/docker/requirements.txt
+++ b/docker/requirements.txt
@@ -1,7 +1,7 @@
 # Base python requirements for docker containers
 
 # Basic package requirements
-setuptools>=57.4.0
+setuptools>=57.4.0,<=60.1.0
 wheel>=0.37.0
 invoke>=1.4.0                   # Invoke build tool