What I have found so far:

  • posteo looks good, but does not support custom domains
  • tutanota can support it though I somewhat doubt their survivability long-term
  • proton mail also supports it, but not a huge fan
  • zoho: tried it years ago and it was ok, subprocesor list has aws and google on the periphery but not core
  • ghandi.net: ?
  • fastmail: ?
  • kolab: ?
  • Mailfence

Are there any others to look at?

I am not looking to self-host.

  • Topik
    2•3 years ago

    I use Zoho. Although it’s not as secure or private as Protonmail or Tutanota, it’s pretty decent, has great features, and most importantly, is affordable. The price is $1 per account, which is much better than Protonmail’s starting $4 price, for example. Zoho has many features and a great control panel, which makes managing many accounts for an organization a breeze.