Have to disagree about the mobile app, while it looks nice and is full-featured and responsive, it is a glorified webview and is totally useless offline -- you can't search emails or even view them without an active mobile data connection.

This is my biggest gripe! I travel a lot and often need offline mode.

I would also love to be able to use widgets on iOS for the calendar.

So many things could be improved with the mobile app.

This is the one thing I wish I checked more thoroughly before I moved 5 domains from Gmail to Fastmail.

Eh, just use another client with IMAP (or maybe JMAP; I haven't dug in enough).

The android app doesn't always notify me of new email - and if it doesn't notify me for one email, it won't notify me again until I get another email (which might be a day or two apart). That's my only complaint. I have a support ticket open for it; I'm hoping they can figure out what is going on.

I agree the service is fantastic but their pricing is still pretty expensive compared to some of their competitors

For me as an American, $5 a month (or less with longer terms) is pretty damn good! Who has cheaper prices that actually competes on features, performance, reliability, goodwill, etc.?

Yeah, while I like their service in general having (mostly) switched in 2018, their mobile app really isn't that great in my experience due to the lack of offline mode, and every so often it seems to forget my login (maybe the session expires, but I never remember that happening with GMail app).