Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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I have been using my own email for many years (to this day). Everything is working great. The main thing is to have a static IP and be able to specify your domain in the PTR record of the ip address.
In general, you will need: postfix (https://wiki.archlinux.org/title/Postfix) OpenDMARC (https://wiki.archlinux.org/title/OpenDMARC) OpenDKIM (https://wiki.archlinux.org/title/OpenDKIM) Dovecot (https://wiki.archlinux.org/title/Dovecot) Some interface to choose from (soGO, roundcube) Maybe graylists, ClamAV, SpamAssassin, or something else to protect your mailbox from spam and viruses. And if you want filtering functionality, then you also need Sieve.
I've been running my own mail for 10+ years. I recommend rspamd for spam filtering. It took the place of SpamAssasin, grey listing, SPF checking, etc. All in one single system.
Thanks, I'll give it a try sometime.