Earlier quoted context omitted.
Fastmail is great, one of the services I love paying for and importing from other providers also is very easy. They even support native push in the iOS stock mail app if you are interested in that. Also I'm incredibly satisfied with their spam filter. I have some old addresses that get a lot of spam but Fastmails catches them all. I periodically check for false positives but never see any.
Is there a wild card feature to capture any address on a domain? I currently have multiple email addresses for a single domain. If I moved the email to fastmail, would I have to pay for each individual email on that domain?
this also allows you to write from any email address in your domain (when composing, change the sender dropdown to your *-alias, and the 'from' line appears and is editable