Fastmail has an easy and fast tool to transfer your mail from Gmail to Fastmail. Happy customer here.
No reports of Fastmail-sent emails getting dropped like I heard one time about Proton-sent emails (I think I saw that in a comment in HN, and only one anecdotal report, so who knows if it's true or not).
Fastmail also does contacts/calendars/file-hosting (which includes the ability to do simple photo sharing and websites).
I've used their support when I got confused about something, and they were very helpful.
No reports of Fastmail-sent emails getting dropped like I heard one time about Proton-sent emails (I think I saw that in a comment in HN, and only one anecdotal report, so who knows if it's true or not).
Fastmail also does contacts/calendars/file-hosting (which includes the ability to do simple photo sharing and websites).
I've used their support when I got confused about something, and they were very helpful.