I stopped reading their privacy policy at "Fastmail is an Australian company" - Australia is a five eyes jurisdiction. That said, I'm a happy customer of almost a decade with them, but my email correspondence is pretty boring and not politically sensitive.
Interesting. Should any email provider based in any of the 5 Eyes (or even 14) be avoided? But I feel, particularly for everyday folk, we have reached the point at which avoiding some level of surveillance is now virtually impossible.
Sadly true. Even if your provider takes privacy seriously, chances are the other side is using US big tech who'd happily give away their copy of your data to any sufficiently credentialed authority.
Just to follow up. Is it your contention (basically) that any interaction with any of the Five Eyes country is suspect? I realise this puts (guesses off top of head) 95% of all internet traffic, theoretically including such 'privacy focussed' open source projects emanating from the five eyes/95%, as suspect too. Are we all incapable of being apart from that 95% (assuming you're in that 95%)?
Have its privacy claims ever been independently audited?
https://www.fastmail.com/bug-bounty/