Any message which includes:
* Precedence: bulk
* X-Autoreply: !no
* X-Autoresponse: !no
* Auto-Submitted: !no
Will not be detected as a bulk message and therefore ignored.
If a handler is disabled, the user should be informed of this issue.
This issue is a part of the MDL-47194 Task.
This issue is a part of the MDL-39707 Epic.
When a checkbox is not checked, it does not submit in the form, therefore
this must be an !empty() test instead of an (int) casting.
This issue is a part of the MDL-47194 Task.
This issue is a part of the MDL-39707 Epic.