Gmail (early adopter, 2004/2005)
Tutanota (2022? -- this is quite a hit and miss for me)
MXroute (2023)
lots of others...
TBH I've recently trying to slim down my email ownerships (lol) to only one or two but damn it's hard!
Because each provider is unique on its own and there will never be a PERFECT email (subjective).
Apart from Gmail, the longest I've been with is FastMail but I've recently closed account there because I don't like the fact that they recycle email address, although I do have a bunch of custom domains.
I like to have "own" the email address which is not my custom domains, for example:
Proton (accidentally deleted my firstname@ hence I never looked back)
Tutanota (same comment as above)
Skiff (ya all know what happened)
Infomaniak (my favourite since last week lol)
Zoho (nice but mobile app is crap to me)
HEY (got my firstname@ here as well but too expensive for me)
OnMail (love and hate, lack of lots of features and updates are too slow)
cock.li (never used it register just for fun, roundcube-only)
RiseUp (rarely use but nothing special, roundcube-only)
Disroot (not bad but same as cock.li and RiseUp, roundcube-only)
Lots of others I didn't mention
