Happy Fastmail customer as well. If you want to leave gmail behind, this service is the way to go. They have a great Web GUI, and accounts have the latest security features. Fastmail supports CalDav/CardDav which works great IMHO.

I'm a happy Fastmail customer, except there's one major annoyance in the web interface: large images, like screenshots, completely break the viewport.

You have to scroll the browser horizontally for 2000 pixels sometimes, looking at fractions of the image at a time (or download each embedded image and open it in a local viewer to contain it to your screen size).

Fastmail support replied essentially "won't fix".

Another happy fastmail customer here. Switched from Google with custom domain. Calendar and contacts are better than Google's too

Aren't they an Australian company, which is from the data protection standpoint still worse than Google?

The iOS app is meh, the webmail is much better but otherwise I'm a happy Fastmail customer and they're 100% worth the money.

The iOS app is almost identical to the webmail.

I only wish their iOS app worked offline