I use gmx.com and riseup.net; but - I'm not saying you should follow my example (and riseup.net isn't even intended for general public use). I've heard protonmail is nice.
More importantly, though: I use POP3 and a proper mail client, so I don't rely on GMX for my old email to continue to exist. I also back it up one in a while along with my other personal file backups.
More importantly, though: I use POP3 and a proper mail client, so I don't rely on GMX for my old email to continue to exist. I also back it up one in a while along with my other personal file backups.