+1

When I migrated from Gmail to Fastmail years ago, I thought Fastmail felt... less featureful.

When I rarely visit my abandoned Gmail, I can't believe I put up with the clunkiness.

Lean software stands the test of time.

Fastmail hasn't had a noteworthy UI change ever.

Minor annoyances:

  - Clicking an iPhone notification opens the app, but never brings me to the actual email
  - It is difficult to unfold the full extended header section on iPhone
  - ...I can't think of more...

I might switch away for a solution that is more affordable when hosting emails for many family members and organisations. But for a handful, I really can't recommend it enough.

The only thing I miss from Gmail is a "send and archive" button to save me a click when replying to emails.

I use it with Spark on macOS and iOS (Spark Classic) and it just works. Archiving works fine, marking as spam actually moves and 'activates' Fastmail's training. There's email masks, aliases, the UI is always fast and responsive in the web view when I go there.