It would be great if you can not only receive but also send from a catchall alias. Imagine the following setup:
If this or similar setup is already possible please comment. What do you think?
For the email@example.com Mailbox set “Allow to send as” to “Disable sender check for domain domain.com (+ alias domains)” if aliasdomain.com is set up as alias domain for domain.com. This will allow to chose [anything]@ as sender address in your mail clients.
That sounds exactly as what I was looking for. I’ll look in to it.
I tried this, but the alias does not show as selectable ‘sender’.
N,v,m. found it, it now is in ‘identities’ , Not as convenient as the automatic aliases, but it works…