I have a free Protonmail account i seldom use but like because they have a Tor address.
I have a paid Tutanota account to which i'm trying to migrate all my mail, from the free GoogleApps-based university account i used for years. I also have an alias i use as a throw-away-ish address.
I have a free GMX account i briefly used, also with a throw-away-is alias, i might just drop it since i'm on Tutanota now anyway.
I'd love to host my own mail server on a VPS with a domain i own, but it's increasingly difficult. The big players came up with DKIM, DMARC, SPF and all these funky acronyms for the sake of fighting spam, but they're also easy ways to make it harder for you to run your own server 'cos they'll just flag you as undesirable. A form of embrace-extend-extinguish i guess.
And then there's spam and actually avoiding it.
Still on my ever increasing TODO list, if nothing else for learning purposes.