You can also use https://docs.cloudron.io/email/#subaddresses without having to add aliases at all.
This is pretty much covering my use case, great, thanks
@girish said in Incorrect error when removing an obsolete alias for a service:
Did you happen to set this up manually?
Hmm, I don't actually know. It's not impossible I guess...
Good to know though, I'll work on cleaning DNS up