Hide My Email is the best Apple product you're probably not using. Here's how it can start shielding your inbox and your privacy now, for just 99 cents.
Alternatives:
FreeLists.org
Gaggle.email (not happy that they genericize the word Listserv)
The email looks decent. Worth the trouble?
Group-Office is an enterprise CRM and groupware tool. Collaborate, Share projects, calendars, files and e-mail online with co-workers and clients. Easy to use and fully customizable.
[in Softaculous]
Firefox Relay makes it easy to create email masks that forward your messages to your true inbox. Use them to protect your online accounts from hackers and unwanted messages.
Top contenders:
Mailfence - Belgian, e3.50/mo
Mailbox.org - German, e3/mo; e1/mo plan only allows custom domain for "team accounts" (more than one account? does the first one have to do the e3 plan?)
Posteo - German, no personal domains
Runbox - Norwegian, inexpensive
Soverin: Dutch, € 3.25/mo
Protonmail or Kolab - Swiss, a bit steep; Protonmail e4.00/mo paid annually
Infomaniak: e1.50/mo (..?)
Pobox: US-based, seems like only the expensive account is for custom domains
Msgsafe.io: defunct
Countermail: Swedish, ~$4/mo
Disroot: Dutch, free but requires donation to use custom domain
Spaceship may not be super-private, but it's economical and US-based
Porkbun: Oregon, $24/year but only 20 max addresses
Getting the syntax right is hard! And it's hiding under /usr/local/cyrus/sbin/
https://www.linuxquestions.org/questions/linux-software-2/cyrus-ipurge-not-working-317640-print/
MTA-STS (full name SMTP Mail Transfer Agent Strict Transport Security) is a new standard that aims to improve the security of SMTP by enabling domain names to opt into strict transport layer security mode that requires authentication (valid public certificates) and encryption (TLS). In this blog post we discuss why MTA-STS exists and how it's used, as well as announce full support for its most recent draft in Hardenize.
[adding a verified avatar logo using open protocols, for mail received in Gmail]
There's gotta be a way to make Majordomo cooperate, where it doesn't modify the message after being signed.
based around dovecot, but has the basic structure