Generate Mail Deletion Rules

[terhechte]

One of the initial features I wanted to implement was being able to drill down to a specific set of emails (say everything from @groupon.com that was send in December 2016) and generate a deletion rule for my mail app (or gmail) so that I could safely remove those emails.

However, there is no standard around this, different apps have different rules, and most of them are not open / documented:

• The gmail rule system is very simple and the only way to generate rules from the queries in Postsack would be to generate a rule for each email with the email identifier which would be a huge rule list
• Apple Mail has a ruling system, but there is no way to import or export them, they're saved in a Plist in the V9 Mail folder and not documented.
• I didn't look into other apps

The better solution would be to write a Pop3 / IMAP client which understands these rules and uses them to delete emails. I started on something like that but gave up quickly because the focus was to finish Postsack first.