Https://zerossl.com/ is a popular alternative. https://www.buypass.com/ is another one I haven't personally tried. - Source: Hacker News / 10 months ago

Get a free cert from https://letsencrypt.org/, https://zerossl.com/, etc. Any modern and reasonable host will have these solutions automated and one click within their panel. Source: about 1 year ago

Letsencrypt and ZeroSSL are two certificate authorities that have an automated system for providing and renewing SSL certificates for free. We're working on some instructions for self-hosting with SSL using Docker. Source: over 1 year ago

" has no SSL certificate, so it is not going to work for a lot the vast majority of users. You can get one for free from https://letsencrypt.org or https://zerossl.com/ or others. Most modern web browsers throw up red "UNSAFE" scare screens when they hit servers without SSL certificates. Source: over 1 year ago

There are companies providing certs for IP address, e.g, zerossl. So it is rare but exists. Source: over 1 year ago

* [1] should be https://stalw.art It's a neat project though, that I hadn't heard of before. I have ran Postfix to do domain-wide email forwarding (to Gmail coincidentally) but going the other way around and having the end destination be self hosted is on my to-do list. - Source: Hacker News / about 1 month ago

As a server (https://stalw.art/) has very solid JMAP support. - Source: Hacker News / 4 months ago

Yes, still using Maddy + Dovecot + Rspamd and everything works fine, but I've been thinking about trying out https://stalw.art/ to be able to try out the new JMAP protocol that is intended to replace IMAP. Source: 6 months ago