Should you run your own mail server?
Updated 7/20/2026
Running your own mail server gives you full control and privacy, but it comes with responsibilities. Here is what to expect before you start.
Advantages
- Full control over your data and mailboxes, with no imposed limits.
- Privacy: emails stay on your server.
- Unlimited addresses on your domains, at a fixed cost.
Challenges
- Deliverability: large servers (Gmail, Outlook) are suspicious of new servers. You need correct SPF, DKIM, DMARC and reverse DNS.
- Maintenance: updates, security and spam filtering are up to you.
- IP reputation: a new IP must be "warmed up" gradually.
What you need
- An IP with good reputation and reverse DNS, see reverse DNS (PTR).
- Correct email records, see SPF, DKIM and DMARC.
- A stable server that runs around the clock.
Alternative
If you only want to send email from an app, an SMTP relay is simpler than a full mail server. For full control, continue with installing a mail server with Mailcow.
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