I was about to move from Google to Fastmail (been looking to move away from Google for a while) and then I read your comment. Now rethinking the decision.
[1] https://blog.fastmail.com/2015/11/11/ddos-attack-may-lead-to...
> We do not respond to extortion attempts, and we will not pay these criminals under any circumstances.
What is a "normal user"? Previously, FastMail customers could get a Family plan that supported custom domains for as low as $10/user/year. New customers who require custom domains must now pay at least $50/user/year. A 400% price increase is a fiasco.