Self-hosted email: mail servers (Stalwart, Mail-in-a-Box), deliverability, SPF/DKIM/DMARC and relaying through a VPS.
What belongs here: Running mail servers, DNS records for mail, deliverability, SMTP relays, app notification email.
What doesn’t: Hosted email providers’ support issues.
Tags to use: email, mail-in-a-box, dns.
Related: Networking, Self-hosted Applications