I do this and make a new alias for everyone I give an address to (such as hn@domain.com). It can be interesting to see who leaks/sell your email address. You can also shut down alias that get out of control.
Indeed! This is why I stopped using it. I love Fastmail, but who knows if I feel that way in 5 years. The entire point of Fastmail + own domain is never being locked in again. Using subdomain addressing locks you in once again.
I'm with @rb666; Don't rely on it as most will support plus+ addressing but not the the fast mail subdomain addressing as I am now in the process of migrating to Migadu.com and I need to go and unsubscribe and resub using the plus+tag. It's a PITA... lesson learned, stick with best industry practices even if there is an easier method because you'll thank yourself later.
catchalls are great. In addition to allowing the use of arbitrary custom addresses on a whim they make it really easy to identify spam and train spam filters. Anything that arrives on multiple random/unused addresses at your domain is spam.
I do this too but sometimes companies reject my replies because the from address isn't the same address they have on record. Maybe there's a way to make the "reply's from" the same as the "original's to" but idk.
With FastMail, you can select your wildcard as your "from" address on their web app, and just directly edit the `*` to be `<whatever>` and it will work fine :)
FastMail lets you change the from: address on the fly if you’ve set up a catch all.
And if you are not with fadtmail, there’s are several “multiple identities” add-ons for thunderbird (and recently a built in one, though it is still buggy) which let you add from addresses on the fly.
dave@hn.mp.com
dave@lobsters.mp.com
Avoids catchalls ;).