Best Self-Hosted Email Archiving in 2026

Open source email archiving, retention, and eDiscovery tools for compliance and searchable email history.

The top-rated pick is OpenArchiver with 2,192 GitHub stars.

2 self-hosted email archiving — ranked by GitHub stars. Browse all

OpenArchiver

Self-hostable open source email archiving platform for compliance, retention, legal hold, and full-text search.

Alternative to:

Mimecast

mail-archiver

Self-hosted web app for archiving, searching, and exporting email from multiple IMAP accounts with migration support.

Alternative to:

Mimecast

Why self-host?

Self-hosting puts you in control. You own your data, avoid vendor lock-in, and eliminate recurring subscription costs. For teams handling sensitive data or operating under strict compliance requirements, running your own infrastructure is often the only viable option.