Which mail accounts can Open Archiver archive?
Google Workspace (Gmail), Microsoft 365 and any IMAP mailbox. You can also import PST files, mbox files and zipped .eml files.
Open Archiver: Email Archive with Full-Text Search
Pull Gmail, Microsoft 365 and IMAP mail into an email archiver you host. Everything lands as .eml files that are deduped, compressed and encrypted at rest.
Compare with similar apps
How Open Archiver stacks up against other backup apps. Add or remove apps to change the comparison.
| Requirement | Open Archiver | ||
|---|---|---|---|
| Price | Free | Free | Free |
| Storage support | Local, S3 | – | Local |
| Deduplication | Yes | – | Yes |
| Web UI | Yes | Yes | Yes |
| Architecture | x86 + ARM | x86 + ARM | x86 + ARM |
| Min hardware | 4 GB RAM | Not stated | Not stated |
| Containers | Worth checking: 5Plus Postgres, Valkey, Meilisearch, Tika | 2Plus Postgres | 1The app alone |
| Database | Postgres | Postgres | file only |
| Runtime | Node | .NET | Rust |
| Docker | Yes | Yes | Yes |
| Linux package | – | – | Yes |
| Windows | – | – | Yes |
| macOS | – | – | Yes |
Common questions
How much RAM does Open Archiver need?
At least 4 GB for the full Docker Compose stack. With external Postgres, Redis (Valkey) and Meilisearch instances, 2 GB is enough.
Does Open Archiver encrypt my archived emails?
Yes, files are encrypted at rest. It also stores a hash of each email and attachment at ingestion, and an integrity report per message shows whether the files are still the originals.
Similar apps to Open Archiver
More apps in Backup.
Backrest
Schedule, browse and restore Restic backups from a web dashboard. Targets include S3, Backblaze B2 and SFTP, plus anything rclone can reach.
Freex86 + ARMGo
Bichon
Download mail from your IMAP accounts into one searchable email archiver that runs as a single Rust binary or container with no external database.
Freex86 + ARMRustOur pick
Duplicacy
Back up to local drives, cloud storage or SFTP with lock-free deduplication.
Free + Paidx86 + ARMGo
Mail Archiver
Sync IMAP and Microsoft 365 mailboxes into an email archive on your own server, then search it or export it as mbox or zipped EML.
Freex86 + ARM.NET
Portabase
Back up the databases behind your home apps, such as Postgres, MySQL and MongoDB, from one dashboard to local disks, S3, SFTP or Google Drive.
Freex86 + ARMNode
Updated