@grischa So, I poked around the mail (private message) feature and I must have kicked a hornet's nest or something because boy did I get stung.

The mail feature is used to handle private messages from/to Friendica, Mastodon, Pleroma or Diaspora, and I can't say for sure that all of them can skip the title. Additionally, mails can be submitted through a Twitter endpoint that seemingly provides a title despite none showing in the actual Twitter interface?

As a result, I can't enact the plan we talked about to allow to send blank subjects (to avoid Content Warnings) and deriving displayed subjects from the body when listing blank subject mail records.