I have those too. But the problem is I migrated away from GMail, where everything worked even with 1 email address, so now I'm stuck with that email address being used by all the people and companies that want to send me email.
(By the way, in GMail you can move emails to "promotional" and "social" folders, and then GMail automatically does that for you for future emails; this is quite handy, but after migrating to Fastmail this is leaving me with quite a mess in my Inbox, since Fastmail doesn't have this option).
You're not stuck; slowly change addresses with the different companies, people, etc. I did it over the course of a few years without hassle. If you spend $10/year for your own domain, then you can use a catchall, and if you ever decide to leave Fast ail for another provider, you don't have to change all the addreses again.
The fact that it requires slowly changing over years is a sign of getting stuck no?
We can theoretically slowly migrate anything. But when effort > X, we consider it being stuck.
>in GMail you can move emails to "promotional" and "social" folders, and then GMail automatically does that for you for future emails
It's not quite as elegant, but you can create a rule from an existing email in the mail options. It will try to guess at the best set of filters to match that type of email (and obviously you can refine that manually if needed), so you can send those types of mails to a Marketing folder.
(By the way, in GMail you can move emails to "promotional" and "social" folders, and then GMail automatically does that for you for future emails; this is quite handy, but after migrating to Fastmail this is leaving me with quite a mess in my Inbox, since Fastmail doesn't have this option).