Sending mails without subject may not work without notice
When sending an email over the platform integrated mailing system, there are reports that these mails get lost.
It is actually true. The sending daemon retries and aborts:
2017-02-21 16:10:09 [ERROR] email send error: <p>The email could not be sent because:</p>
<ul>
<li>Please provide an email subject</li>
</ul>
2017-02-21 16:10:09 [ERROR] Array
(
[recipients] => Array
(
[0] => Array
(
[0] => mail@matthias-larisch.de
[1] =>
)
)
[attachments] => Array
(
)
[from] => Array
(
[0] => m.larisch@lebensmittelretten.de
[1] => Matthias Larisch
)
[body] => hallo
[html] => hallo
[subject] =>
[identifier] =>
)
The user does not know about this because we don't use any kind of safety or feedback in the pipeline.