Why do self-hosted emails keep going to spam?
Major email providers constantly flag self-hosted messages as spam, leaving owners unable to reach inboxes reliably. This forces people to abandon self-hosting entirely and rely on external services like Fastmail just to get their messages delivered.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Using third-party email hosting or routing services like Fastmail, Google, Microsoft, or Proton for reliable delivery
- 2Relying on community assistance and AI tools to troubleshoot email server configurations
In their words
Unedited, most upvoted first, each linked to the thread it came from.
Where this came up
People with this problem also raised
- 3How to stop an email spam bomb attacking a user inbox
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- 6Getting weird scam letters or emails from banks I don't use
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- 3Why can't I send emails from a custom domain in Gmail anymore?
- 3How to tell if a BEC attack was caught automatically or by a human