Title & body not required if attachment specified (#916)

apprise/Apprise.py

@@ -458,7 +458,7 @@ class Apprise:
             logger.error(msg)
             raise TypeError(msg)
 
-        if not (title or body):
+        if not (title or body or attach):
             msg = "No message content specified to deliver"
             logger.error(msg)
             raise TypeError(msg)
@@ -689,6 +689,11 @@ class Apprise:
                 # Placeholder - populated below
                 'details': None,
 
+                # Let upstream service know of the plugins that support
+                # attachments
+                'attachment_support': getattr(
+                    plugin, 'attachment_support', False),
+
                 # Differentiat between what is a custom loaded plugin and
                 # which is native.
                 'category': getattr(plugin, 'category', None)

apprise/plugins/NotifyAppriseAPI.py

@@ -77,6 +77,9 @@ class NotifyAppriseAPI(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_apprise_api'
 
+    # Support attachments
+    attachment_support = True
+
     # Depending on the number of transactions/notifications taking place, this
     # could take a while. 30 seconds should be enough to perform the task
     socket_read_timeout = 30.0
@@ -260,7 +263,7 @@ class NotifyAppriseAPI(NotifyBase):
 
         attachments = []
         files = []
-        if attach:
+        if attach and self.attachment_support:
             for no, attachment in enumerate(attach, start=1):
                 # Perform some simple error checking
                 if not attachment:
@@ -310,7 +313,10 @@ class NotifyAppriseAPI(NotifyBase):
 
         if self.method == AppriseAPIMethod.JSON:
             headers['Content-Type'] = 'application/json'
-            payload['attachments'] = attachments
+
+            if attachments:
+                payload['attachments'] = attachments
+
             payload = dumps(payload)
 
         if self.__tags:

apprise/plugins/NotifyBase.py

@@ -139,6 +139,18 @@ class NotifyBase(URLBase):
     # Default Overflow Mode
     overflow_mode = OverflowMode.UPSTREAM
 
+    # Support Attachments; this defaults to being disabled.
+    # Since apprise allows you to send attachments without a body or title
+    # defined, by letting Apprise know the plugin won't support attachments
+    # up front, it can quickly pass over and ignore calls to these end points.
+
+    # You must set this to true if your application can handle attachments.
+    # You must also consider a flow change to your notification if this is set
+    # to True as well as now there will be cases where both the body and title
+    # may not be set.  There will never be a case where a body, or attachment
+    # isn't set in the same call to your notify() function.
+    attachment_support = False
+
     # Default Title HTML Tagging
     # When a title is specified for a notification service that doesn't accept
     # titles, by default apprise tries to give a plesant view and convert the
@@ -316,7 +328,7 @@ class NotifyBase(URLBase):
             the_cors = (do_send(**kwargs2) for kwargs2 in send_calls)
             return all(await asyncio.gather(*the_cors))
 
-    def _build_send_calls(self, body, title=None,
+    def _build_send_calls(self, body=None, title=None,
                           notify_type=NotifyType.INFO, overflow=None,
                           attach=None, body_format=None, **kwargs):
         """
@@ -339,6 +351,28 @@ class NotifyBase(URLBase):
                 # bad attachments
                 raise
 
+            # Handle situations where the body is None
+            body = '' if not body else body
+
+        elif not (body or attach):
+            # If there is not an attachment at the very least, a body must be
+            # present
+            msg = "No message body or attachment was specified."
+            self.logger.warning(msg)
+            raise TypeError(msg)
+
+        if not body and not self.attachment_support:
+            # If no body was specified, then we know that an attachment
+            # was.  This is logic checked earlier in the code.
+            #
+            # Knowing this, if the plugin itself doesn't support sending
+            # attachments, there is nothing further to do here, just move
+            # along.
+            msg = f"{self.service_name} does not support attachments; " \
+                " service skipped"
+            self.logger.warning(msg)
+            raise TypeError(msg)
+
         # Handle situations where the title is None
         title = '' if not title else title
 

apprise/plugins/NotifyDiscord.py

@@ -84,6 +84,9 @@ class NotifyDiscord(NotifyBase):
     # Discord Webhook
     notify_url = 'https://discord.com/api/webhooks'
 
+    # Support attachments
+    attachment_support = True
+
     # Allows the user to specify the NotifyImageSize object
     image_size = NotifyImageSize.XY_256
 
@@ -255,61 +258,6 @@ class NotifyDiscord(NotifyBase):
         # Acquire image_url
         image_url = self.image_url(notify_type)
 
-        # our fields variable
-        fields = []
-
-        if self.notify_format == NotifyFormat.MARKDOWN:
-            # Use embeds for payload
-            payload['embeds'] = [{
-                'author': {
-                    'name': self.app_id,
-                    'url': self.app_url,
-                },
-                'title': title,
-                'description': body,
-
-                # Our color associated with our notification
-                'color': self.color(notify_type, int),
-            }]
-
-            if self.footer:
-                # Acquire logo URL
-                logo_url = self.image_url(notify_type, logo=True)
-
-                # Set Footer text to our app description
-                payload['embeds'][0]['footer'] = {
-                    'text': self.app_desc,
-                }
-
-                if self.footer_logo and logo_url:
-                    payload['embeds'][0]['footer']['icon_url'] = logo_url
-
-            if self.include_image and image_url:
-                payload['embeds'][0]['thumbnail'] = {
-                    'url': image_url,
-                    'height': 256,
-                    'width': 256,
-                }
-
-            if self.fields:
-                # Break titles out so that we can sort them in embeds
-                description, fields = self.extract_markdown_sections(body)
-
-                # Swap first entry for description
-                payload['embeds'][0]['description'] = description
-                if fields:
-                    # Apply our additional parsing for a better presentation
-                    payload['embeds'][0]['fields'] = \
-                        fields[:self.discord_max_fields]
-
-                    # Remove entry from head of fields
-                    fields = fields[self.discord_max_fields:]
-
-        else:
-            # not markdown
-            payload['content'] = \
-                body if not title else "{}\r\n{}".format(title, body)
-
         if self.avatar and (image_url or self.avatar_url):
             payload['avatar_url'] = \
                 self.avatar_url if self.avatar_url else image_url
@@ -318,22 +266,81 @@ class NotifyDiscord(NotifyBase):
             # Optionally override the default username of the webhook
             payload['username'] = self.user
 
+        # Associate our thread_id with our message
         params = {'thread_id': self.thread_id} if self.thread_id else None
-        if not self._send(payload, params=params):
-            # We failed to post our message
-            return False
 
-        # Process any remaining fields IF set
-        if fields:
-            payload['embeds'][0]['description'] = ''
-            for i in range(0, len(fields), self.discord_max_fields):
-                payload['embeds'][0]['fields'] = \
-                    fields[i:i + self.discord_max_fields]
-                if not self._send(payload):
-                    # We failed to post our message
-                    return False
+        if body:
+            # our fields variable
+            fields = []
 
-        if attach:
+            if self.notify_format == NotifyFormat.MARKDOWN:
+                # Use embeds for payload
+                payload['embeds'] = [{
+                    'author': {
+                        'name': self.app_id,
+                        'url': self.app_url,
+                    },
+                    'title': title,
+                    'description': body,
+
+                    # Our color associated with our notification
+                    'color': self.color(notify_type, int),
+                }]
+
+                if self.footer:
+                    # Acquire logo URL
+                    logo_url = self.image_url(notify_type, logo=True)
+
+                    # Set Footer text to our app description
+                    payload['embeds'][0]['footer'] = {
+                        'text': self.app_desc,
+                    }
+
+                    if self.footer_logo and logo_url:
+                        payload['embeds'][0]['footer']['icon_url'] = logo_url
+
+                if self.include_image and image_url:
+                    payload['embeds'][0]['thumbnail'] = {
+                        'url': image_url,
+                        'height': 256,
+                        'width': 256,
+                    }
+
+                if self.fields:
+                    # Break titles out so that we can sort them in embeds
+                    description, fields = self.extract_markdown_sections(body)
+
+                    # Swap first entry for description
+                    payload['embeds'][0]['description'] = description
+                    if fields:
+                        # Apply our additional parsing for a better
+                        # presentation
+                        payload['embeds'][0]['fields'] = \
+                            fields[:self.discord_max_fields]
+
+                        # Remove entry from head of fields
+                        fields = fields[self.discord_max_fields:]
+
+            else:
+                # not markdown
+                payload['content'] = \
+                    body if not title else "{}\r\n{}".format(title, body)
+
+            if not self._send(payload, params=params):
+                # We failed to post our message
+                return False
+
+            # Process any remaining fields IF set
+            if fields:
+                payload['embeds'][0]['description'] = ''
+                for i in range(0, len(fields), self.discord_max_fields):
+                    payload['embeds'][0]['fields'] = \
+                        fields[i:i + self.discord_max_fields]
+                    if not self._send(payload):
+                        # We failed to post our message
+                        return False
+
+        if attach and self.attachment_support:
             # Update our payload; the idea is to preserve it's other detected
             # and assigned values for re-use here too
             payload.update({
@@ -356,7 +363,7 @@ class NotifyDiscord(NotifyBase):
             for attachment in attach:
                 self.logger.info(
                     'Posting Discord Attachment {}'.format(attachment.name))
-                if not self._send(payload, attach=attachment):
+                if not self._send(payload, params=params, attach=attachment):
                     # We failed to post our message
                     return False
 

apprise/plugins/NotifyEmail.py

@@ -341,6 +341,9 @@ class NotifyEmail(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_email'
 
+    # Support attachments
+    attachment_support = True
+
     # Default Notify Format
     notify_format = NotifyFormat.HTML
 
@@ -770,7 +773,7 @@ class NotifyEmail(NotifyBase):
             else:
                 base = MIMEText(body, 'plain', 'utf-8')
 
-            if attach:
+            if attach and self.attachment_support:
                 mixed = MIMEMultipart("mixed")
                 mixed.attach(base)
                 # Now store our attachments

apprise/plugins/NotifyForm.py

@@ -99,6 +99,9 @@ class NotifyForm(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_Custom_Form'
 
+    # Support attachments
+    attachment_support = True
+
     # Allows the user to specify the NotifyImageSize object
     image_size = NotifyImageSize.XY_128
 
@@ -345,7 +348,7 @@ class NotifyForm(NotifyBase):
 
         # Track our potential attachments
         files = []
-        if attach:
+        if attach and self.attachment_support:
             for no, attachment in enumerate(attach, start=1):
                 # Perform some simple error checking
                 if not attachment:

apprise/plugins/NotifyJSON.py

@@ -80,6 +80,9 @@ class NotifyJSON(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_Custom_JSON'
 
+    # Support attachments
+    attachment_support = True
+
     # Allows the user to specify the NotifyImageSize object
     image_size = NotifyImageSize.XY_128
 
@@ -289,7 +292,7 @@ class NotifyJSON(NotifyBase):
 
         # Track our potential attachments
         attachments = []
-        if attach:
+        if attach and self.attachment_support:
             for attachment in attach:
                 # Perform some simple error checking
                 if not attachment:

apprise/plugins/NotifyMailgun.py

@@ -121,6 +121,9 @@ class NotifyMailgun(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_mailgun'
 
+    # Support attachments
+    attachment_support = True
+
     # Default Notify Format
     notify_format = NotifyFormat.HTML
 
@@ -371,7 +374,7 @@ class NotifyMailgun(NotifyBase):
         # Track our potential files
         files = {}
 
-        if attach:
+        if attach and self.attachment_support:
             for idx, attachment in enumerate(attach):
                 # Perform some simple error checking
                 if not attachment:

apprise/plugins/NotifyMastodon.py

@@ -111,6 +111,10 @@ class NotifyMastodon(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_mastodon'
 
+    # Support attachments
+    attachment_support = True
+
+    # Allows the user to specify the NotifyImageSize object
     # Allows the user to specify the NotifyImageSize object; this is supported
     # through the webhook
     image_size = NotifyImageSize.XY_128
@@ -414,11 +418,10 @@ class NotifyMastodon(NotifyBase):
             else:
                 targets.add(myself)
 
-        if attach:
+        if attach and self.attachment_support:
             # We need to upload our payload first so that we can source it
             # in remaining messages
             for attachment in attach:
-
                 # Perform some simple error checking
                 if not attachment:
                     # We could not access the attachment
@@ -578,7 +581,7 @@ class NotifyMastodon(NotifyBase):
                 _payload = deepcopy(payload)
                 _payload['media_ids'] = media_ids
 
-                if no:
+                if no or not body:
                     # strip text and replace it with the image representation
                     _payload['status'] = \
                         '{:02d}/{:02d}'.format(no + 1, len(batches))

apprise/plugins/NotifyNtfy.py

@@ -172,6 +172,9 @@ class NotifyNtfy(NotifyBase):
     # Default upstream/cloud host if none is defined
     cloud_notify_url = 'https://ntfy.sh'
 
+    # Support attachments
+    attachment_support = True
+
     # Allows the user to specify the NotifyImageSize object
     image_size = NotifyImageSize.XY_256
 
@@ -405,14 +408,14 @@ class NotifyNtfy(NotifyBase):
             # Retrieve our topic
             topic = topics.pop()
 
-            if attach:
+            if attach and self.attachment_support:
                 # We need to upload our payload first so that we can source it
                 # in remaining messages
                 for no, attachment in enumerate(attach):
 
-                    # First message only includes the text
-                    _body = body if not no else None
-                    _title = title if not no else None
+                    # First message only includes the text (if defined)
+                    _body = body if not no and body else None
+                    _title = title if not no and title else None
 
                     # Perform some simple error checking
                     if not attachment:
@@ -543,11 +546,8 @@ class NotifyNtfy(NotifyBase):
         # Default response type
         response = None
 
-        if data:
-            data = data if attach else dumps(data)
-
-        else:  # not data:
-            data = None
+        if not attach:
+            data = dumps(data)
 
         try:
             r = requests.post(

apprise/plugins/NotifyPushBullet.py

@@ -75,6 +75,9 @@ class NotifyPushBullet(NotifyBase):
     # PushBullet uses the http protocol with JSON requests
     notify_url = 'https://api.pushbullet.com/v2/{}'
 
+    # Support attachments
+    attachment_support = True
+
     # Define object templates
     templates = (
         '{schema}://{accesstoken}',
@@ -150,7 +153,7 @@ class NotifyPushBullet(NotifyBase):
         # Build a list of our attachments
         attachments = []
 
-        if attach:
+        if attach and self.attachment_support:
             # We need to upload our payload first so that we can source it
             # in remaining messages
             for attachment in attach:
@@ -261,14 +264,15 @@ class NotifyPushBullet(NotifyBase):
                     "PushBullet recipient {} parsed as a device"
                     .format(recipient))
 
-            okay, response = self._send(
-                self.notify_url.format('pushes'), payload)
-            if not okay:
-                has_error = True
-                continue
+            if body:
+                okay, response = self._send(
+                    self.notify_url.format('pushes'), payload)
+                if not okay:
+                    has_error = True
+                    continue
 
-            self.logger.info(
-                'Sent PushBullet notification to "%s".' % (recipient))
+                self.logger.info(
+                    'Sent PushBullet notification to "%s".' % (recipient))
 
             for attach_payload in attachments:
                 # Send our attachments to our same user (already prepared as

apprise/plugins/NotifyPushSafer.py

@@ -336,6 +336,9 @@ class NotifyPushSafer(NotifyBase):
     # The default secure protocol
     secure_protocol = 'psafers'
 
+    # Support attachments
+    attachment_support = True
+
     # Number of requests to a allow per second
     request_rate_per_sec = 1.2
 
@@ -546,7 +549,7 @@ class NotifyPushSafer(NotifyBase):
         # Initialize our list of attachments
         attachments = []
 
-        if attach:
+        if attach and self.attachment_support:
             # We need to upload our payload first so that we can source it
             # in remaining messages
             for attachment in attach:

apprise/plugins/NotifyPushover.py

@@ -164,6 +164,9 @@ class NotifyPushover(NotifyBase):
     # Pushover uses the http protocol with JSON requests
     notify_url = 'https://api.pushover.net/1/messages.json'
 
+    # Support attachments
+    attachment_support = True
+
     # The maximum allowable characters allowed in the body per message
     body_maxlen = 1024
 
@@ -381,22 +384,25 @@ class NotifyPushover(NotifyBase):
             if self.priority == PushoverPriority.EMERGENCY:
                 payload.update({'retry': self.retry, 'expire': self.expire})
 
-            if attach:
+            if attach and self.attachment_support:
                 # Create a copy of our payload
                 _payload = payload.copy()
 
                 # Send with attachments
-                for attachment in attach:
-                    # Simple send
+                for no, attachment in enumerate(attach):
+                    if no or not body:
+                        # To handle multiple attachments, clean up our message
+                        _payload['message'] = attachment.name
+
                     if not self._send(_payload, attachment):
                         # Mark our failure
                         has_error = True
                         # clean exit from our attachment loop
                         break
 
-                    # To handle multiple attachments, clean up our message
-                    _payload['title'] = '...'
-                    _payload['message'] = attachment.name
+                    # Clear our title if previously set
+                    _payload['title'] = ''
+
                     # No need to alarm for each consecutive attachment uploaded
                     # afterwards
                     _payload['sound'] = PushoverSound.NONE

apprise/plugins/NotifySES.py

@@ -136,6 +136,9 @@ class NotifySES(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_ses'
 
+    # Support attachments
+    attachment_support = True
+
     # AWS is pretty good for handling data load so request limits
     # can occur in much shorter bursts
     request_rate_per_sec = 2.5
@@ -427,7 +430,8 @@ class NotifySES(NotifyBase):
                 content = MIMEText(body, 'plain', 'utf-8')
 
             # Create a Multipart container if there is an attachment
-            base = MIMEMultipart() if attach else content
+            base = MIMEMultipart() \
+                if attach and self.attachment_support else content
 
             # TODO: Deduplicate with `NotifyEmail`?
             base['Subject'] = Header(title, 'utf-8')
@@ -443,7 +447,7 @@ class NotifySES(NotifyBase):
                     timezone.utc).strftime("%a, %d %b %Y %H:%M:%S +0000")
             base['X-Application'] = self.app_id
 
-            if attach:
+            if attach and self.attachment_support:
                 # First attach our body to our content as the first element
                 base.attach(content)
 

apprise/plugins/NotifySMSEagle.py

@@ -112,6 +112,9 @@ class NotifySMSEagle(NotifyBase):
     # The path we send our notification to
     notify_path = '/jsonrpc/sms'
 
+    # Support attachments
+    attachment_support = True
+
     # The maxumum length of the text message
     # The actual limit is 160 but SMSEagle looks after the handling
     # of large messages in it's upstream service
@@ -340,7 +343,7 @@ class NotifySMSEagle(NotifyBase):
         has_error = False
 
         attachments = []
-        if attach:
+        if attach and self.attachment_support:
             for attachment in attach:
                 # Perform some simple error checking
                 if not attachment:

apprise/plugins/NotifySMTP2Go.py

@@ -91,6 +91,9 @@ class NotifySMTP2Go(NotifyBase):
     # Notify URL
     notify_url = 'https://api.smtp2go.com/v3/email/send'
 
+    # Support attachments
+    attachment_support = True
+
     # Default Notify Format
     notify_format = NotifyFormat.HTML
 
@@ -294,8 +297,8 @@ class NotifySMTP2Go(NotifyBase):
         # Track our potential attachments
         attachments = []
 
-        if attach:
-            for idx, attachment in enumerate(attach):
+        if attach and self.attachment_support:
+            for attachment in attach:
                 # Perform some simple error checking
                 if not attachment:
                     # We could not access the attachment

apprise/plugins/NotifySignalAPI.py

@@ -68,6 +68,9 @@ class NotifySignalAPI(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_signal'
 
+    # Support attachments
+    attachment_support = True
+
     # The maximum targets to include when doing batch transfers
     default_batch_size = 10
 
@@ -234,7 +237,7 @@ class NotifySignalAPI(NotifyBase):
         has_error = False
 
         attachments = []
-        if attach:
+        if attach and self.attachment_support:
             for attachment in attach:
                 # Perform some simple error checking
                 if not attachment:
@@ -281,7 +284,7 @@ class NotifySignalAPI(NotifyBase):
         payload = {
             'message': "{}{}".format(
                 '' if not self.status else '{} '.format(
-                    self.asset.ascii(notify_type)), body),
+                    self.asset.ascii(notify_type)), body).rstrip(),
             "number": self.source,
             "recipients": []
         }

apprise/plugins/NotifySlack.py

@@ -143,6 +143,10 @@ class NotifySlack(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_slack'
 
+    # Support attachments
+    attachment_support = True
+
+    # The maximum targets to include when doing batch transfers
     # Slack Webhook URL
     webhook_url = 'https://hooks.slack.com/services'
 
@@ -522,7 +526,8 @@ class NotifySlack(NotifyBase):
                 # Include the footer only if specified to do so
                 payload['attachments'][0]['footer'] = self.app_id
 
-        if attach and self.mode is SlackMode.WEBHOOK:
+        if attach and self.attachment_support \
+                and self.mode is SlackMode.WEBHOOK:
             # Be friendly; let the user know why they can't send their
             # attachments if using the Webhook mode
             self.logger.warning(
@@ -600,7 +605,8 @@ class NotifySlack(NotifyBase):
                     ' to {}'.format(channel)
                     if channel is not None else ''))
 
-        if attach and self.mode is SlackMode.BOT and attach_channel_list:
+        if attach and self.attachment_support and \
+                self.mode is SlackMode.BOT and attach_channel_list:
             # Send our attachments (can only be done in bot mode)
             for attachment in attach:
 

apprise/plugins/NotifySparkPost.py

@@ -118,6 +118,9 @@ class NotifySparkPost(NotifyBase):
     # The services URL
     service_url = 'https://sparkpost.com/'
 
+    # Support attachments
+    attachment_support = True
+
     # All notification requests are secure
     secure_protocol = 'sparkpost'
 
@@ -543,7 +546,7 @@ class NotifySparkPost(NotifyBase):
         else:
             payload['content']['text'] = body
 
-        if attach:
+        if attach and self.attachment_support:
             # Prepare ourselves an attachment object
             payload['content']['attachments'] = []
 

apprise/plugins/NotifyStreamlabs.py

@@ -277,8 +277,7 @@ class NotifyStreamlabs(NotifyBase):
 
         return
 
-    def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
-             **kwargs):
+    def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
         """
         Perform Streamlabs notification call (either donation or alert)
         """

apprise/plugins/NotifyTelegram.py

@@ -123,6 +123,9 @@ class NotifyTelegram(NotifyBase):
     # Telegram uses the http protocol with JSON requests
     notify_url = 'https://api.telegram.org/bot'
 
+    # Support attachments
+    attachment_support = True
+
     # Allows the user to specify the NotifyImageSize object
     image_size = NotifyImageSize.XY_256
 
@@ -715,6 +718,10 @@ class NotifyTelegram(NotifyBase):
             # Prepare our payload based on HTML or TEXT
             payload['text'] = body
 
+        # Handle payloads without a body specified (but an attachment present)
+        attach_content = \
+            TelegramContentPlacement.AFTER if not body else self.content
+
         # Create a copy of the chat_ids list
         targets = list(self.targets)
         while len(targets):
@@ -748,7 +755,8 @@ class NotifyTelegram(NotifyBase):
                         'Failed to send Telegram type image to {}.',
                         payload['chat_id'])
 
-            if attach and self.content == TelegramContentPlacement.AFTER:
+            if attach and self.attachment_support and \
+                    attach_content == TelegramContentPlacement.AFTER:
                 # Send our attachments now (if specified and if it exists)
                 if not self._send_attachments(
                         chat_id=payload['chat_id'], notify_type=notify_type,
@@ -757,6 +765,10 @@ class NotifyTelegram(NotifyBase):
                     has_error = True
                     continue
 
+                if not body:
+                    # Nothing more to do; move along to the next attachment
+                    continue
+
             # Always call throttle before any remote server i/o is made;
             # Telegram throttles to occur before sending the image so that
             # content can arrive together.
@@ -819,7 +831,8 @@ class NotifyTelegram(NotifyBase):
 
             self.logger.info('Sent Telegram notification.')
 
-            if attach and self.content == TelegramContentPlacement.BEFORE:
+            if attach and self.attachment_support \
+                    and attach_content == TelegramContentPlacement.BEFORE:
                 # Send our attachments now (if specified and if it exists) as
                 # it was identified to send the content before the attachments
                 # which is now done.

apprise/plugins/NotifyTwitter.py

@@ -88,6 +88,9 @@ class NotifyTwitter(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_twitter'
 
+    # Support attachments
+    attachment_support = True
+
     # Do not set body_maxlen as it is set in a property value below
     # since the length varies depending if we are doing a direct message
     # or a tweet
@@ -285,7 +288,7 @@ class NotifyTwitter(NotifyBase):
         # Build a list of our attachments
         attachments = []
 
-        if attach:
+        if attach and self.attachment_support:
             # We need to upload our payload first so that we can source it
             # in remaining messages
             for attachment in attach:
@@ -414,7 +417,7 @@ class NotifyTwitter(NotifyBase):
                 _payload = deepcopy(payload)
                 _payload['media_ids'] = media_ids
 
-                if no:
+                if no or not body:
                     # strip text and replace it with the image representation
                     _payload['status'] = \
                         '{:02d}/{:02d}'.format(no + 1, len(batches))
@@ -514,7 +517,7 @@ class NotifyTwitter(NotifyBase):
                     'additional_owners':
                     ','.join([str(x) for x in targets.values()])
                 }
-                if no:
+                if no or not body:
                     # strip text and replace it with the image representation
                     _data['text'] = \
                         '{:02d}/{:02d}'.format(no + 1, len(attachments))

apprise/plugins/NotifyXML.py

@@ -79,6 +79,9 @@ class NotifyXML(NotifyBase):
     # A URL that takes you to the setup/help of the specific protocol
     setup_url = 'https://github.com/caronc/apprise/wiki/Notify_Custom_XML'
 
+    # Support attachments
+    attachment_support = True
+
     # Allows the user to specify the NotifyImageSize object
     image_size = NotifyImageSize.XY_128
 
@@ -340,7 +343,7 @@ class NotifyXML(NotifyBase):
             ['<{}>{}</{}>'.format(k, v, k) for k, v in payload_base.items()])
 
         attachments = []
-        if attach:
+        if attach and self.attachment_support:
             for attachment in attach:
                 # Perform some simple error checking
                 if not attachment:

docker-compose.yml

@@ -14,6 +14,13 @@ services:
     volumes:
       - ./:/apprise
 
+  test.py311:
+    build:
+      context: .
+      dockerfile: Dockerfile.py311
+    volumes:
+      - ./:/apprise
+
   rpmbuild.el8:
     build:
       context: .
@@ -36,6 +43,17 @@ services:
       - ./:/apprise
 
 
+#
+# Every Day testing
+#
+# Connect to web and create a new project using the manage script
+# -> docker-compose run --rm test.py311 bash
+# bin/apprise -
+# bin/checkdone.sh
+
+#
+# Other Testing
+#
 # Connect to web and create a new project using the manage script
 # -> docker-compose run --rm test.py36 bash
 # bin/apprise -

test/helpers/rest.py

@@ -477,6 +477,52 @@ class AppriseURLTester:
                         notify_type=notify_type,
                         attach=attach) == attach_response
 
+                    if obj.attachment_support:
+                        #
+                        # Services that support attachments should support
+                        # sending a attachment (or more) without a body or
+                        # title specified:
+                        #
+                        assert obj.notify(
+                            body=None, title=None,
+                            notify_type=notify_type,
+                            attach=attach) == attach_response
+
+                        # Turn off attachment support on the notifications
+                        # that support it so we can test that any logic we
+                        # have ot test against this flag is ran
+                        obj.attachment_support = False
+
+                        #
+                        # Notifications should still transmit as normal if
+                        # Attachment support is flipped off
+                        #
+                        assert obj.notify(
+                            body=self.body, title=self.title,
+                            notify_type=notify_type,
+                            attach=attach) == notify_response
+
+                        #
+                        # We should not be able to send a message without a
+                        # body or title in this circumstance
+                        #
+                        assert obj.notify(
+                            body=None, title=None,
+                            notify_type=notify_type,
+                            attach=attach) is False
+
+                        # Toggle Back
+                        obj.attachment_support = True
+
+                    else:  # No Attachment support
+                        #
+                        # We should not be able to send a message without a
+                        # body or title in this circumstance
+                        #
+                        assert obj.notify(
+                            body=None, title=None,
+                            notify_type=notify_type,
+                            attach=attach) is False
             else:
 
                 for _exception in self.req_exceptions:

test/test_api.py

@@ -257,9 +257,11 @@ def apprise_test(do_notify):
     assert do_notify(a, title=object(), body=b'bytes') is False
     assert do_notify(a, title=b"bytes", body=object()) is False
 
-    # As long as one is present, we're good
+    # A Body must be present
+    assert do_notify(a, title='present', body=None) is False
+
+    # Other combinations work fine
     assert do_notify(a, title=None, body='present') is True
-    assert do_notify(a, title='present', body=None) is True
     assert do_notify(a, title="present", body="present") is True
 
     # Send Attachment with success

test/test_plugin_boxcar.py

@@ -170,7 +170,13 @@ def test_plugin_boxcar_edge_cases(mock_post, mock_get):
     # Test notifications without a body or a title
     p = NotifyBoxcar(access=access, secret=secret, targets=None)
 
-    assert p.notify(body=None, title=None, notify_type=NotifyType.INFO) is True
+    # Neither a title or body was specified
+    assert p.notify(
+        body=None, title=None, notify_type=NotifyType.INFO) is False
+
+    # Acceptable when data is provided:
+    assert p.notify(
+        body="Test", title=None, notify_type=NotifyType.INFO) is True
 
     # Test comma, separate values
     device = 'a' * 64