I adopted a mix of both: FM for non-secure and calendar stuff, ProtonMail.ch for stuff that needs to stay private. I do love FastMail -- just wish their iOS ap

I adopted a mix of both: FM for non-secure and calendar stuff, ProtonMail.ch for stuff that needs to stay private. I do love FastMail -- just wish their iOS app allowed me to sign into and switch between multiple FM accounts like Gmail does. The lack of this feature is the ONLY reason I'm not Gmail-free yet.