Open Archiver Enterprise keeps company email searchable on infrastructure controlled by the organization. It connects to Google Workspace, Microsoft 365, and IMAP, and supports bulk imports from PST, EML, and MBOX files. Enterprise journaling captures unmodified messages for each recipient, including BCC recipients, alongside mailbox synchronization. Full-text search covers email and attachments, and archived messages can be exported as EML files. Enterprise features include retention policies, legal holds, a hash-chained audit log, and integrity reports for GoBD and GDPR-related workflows. Archived files can be encrypted with AES-256; identity controls include OIDC and SAML single sign-on, identity-provider group role mapping, and organization-wide two-factor authentication policies. The vendor says email, the index, and encryption keys remain on customer-controlled servers, and messages are stored as plain .eml files. The open-source self-hosted edition is free. Enterprise is a perpetual license purchased once per archived mailbox at 14.00 EUR per once, with the first year of updates and support included. Enterprise features are enabled individually by license key, so a license may not include every feature.
Who it is for
Open Archiver Enterprise suits organizations that need a searchable email archive on infrastructure they control. Its journaling and compliance features may suit teams managing retention, legal holds, and audit records.
What is good
- Connects to Google Workspace, Microsoft 365, and IMAP.
- Supports bulk PST, EML, and MBOX imports.
- Journaling captures messages per recipient, including BCC.
- Includes full-text search across email and attachments.
- Enterprise license is perpetual.
What to know first
- Enterprise features are entitled individually by license key.
- Updates and support stop if support lapses.
- Enterprise costs 14.00 EUR per archived mailbox, paid once.
Verdict
Open Archiver combines controlled self-hosting with email ingestion, search, and Enterprise compliance features. Check which features are included in a license key and note that ongoing updates and technical support stop if support lapses.
Open Archiver Enterprise plans and pricing
All plansCompared on email archiving software
- Free plan
- Yes
- Legal hold
- Yes
- eDiscovery tools
- Yes
- Journal capture
- Yes
- Search and export
- Full-text search across email and attachments; EML export
