Setting up an e-Mail I like the alias option for a user-based catchall (subaddress, plusaddress). It would be really helpful to be able to specify “burned” addresses.
Example: Years ago I used a linkedin+jb style mail, that became a spam source. So I replaced it. Setting up the catchall subaddress now I suddenly get those spam mails (+10 years later, still) on that “subaddress” again. Yes, the Mail Client can filter those, but it would be good to have a field to add CSV subaddresses. Maybe also to be spam-samples like a honeypot?
Aside. Filtering in the mail client requires that I identify the spam first as “invalidated account”, sometimes difficult.