There is an implication in this thread that one needs to create an alias to be able to apply a subdomain for that address. (For domains I own)
But I think that might be the case only if you have not created the "*" catchall for that domain.
Is this correct?
For example, say I have domain weeds.com
And I have setup the catchall alias *@weeds.com to point to my Fastmail user account.
If I create a subdomain address on the fly such as
fred@greedybank.weeds.com and give that address to greedybank ...
Then emails to
fred@greedybank.weeds.com should arrive in my FM account without the requirement to setup an alias of
greedybank@weeds.com.
I have tested this and it seems to work fine.
Any comments on this method?
I guess it would fail if I removed the catchall on my domain.
But other than that?