Open Archiver Enterprise

Open Archiver Enterprise is a self-hosted archive for organizations that need to preserve and search company email. It is best for teams that want control over archived data and need compliance-oriented capture. Its strongest advantage is pairing recipient-level journaling with a perpetual per-mailbox license; buyers should confirm which Enterprise features their license key includes.

Overview

The archive connects to Google Workspace, Microsoft 365 and IMAP, and supports bulk imports from PST, EML and MBOX files. Full-text search spans email and attachments, and messages can be exported as EML. Archived messages are stored as plain .eml files, giving teams a portable format. Because the archive, index and encryption keys stay on customer-controlled servers, the product suits organizations that prioritize data control. The trade-off is that they must deploy and operate the hosting themselves.

The installation guide describes using Docker Compose to deploy the web interface on a server or local machine. This supports self-managed deployments, but does not remove the operational work of maintaining the environment.

Key features

Enterprise journaling captures unmodified messages per recipient, including BCC recipients, alongside mailbox synchronization. That makes it more suitable than mailbox sync alone for organizations that need recipient-level message records.

Retention policies, legal holds, a hash-chained audit log and integrity reports support GoBD and GDPR-related workflows. AES-256 encryption protects archived files. OIDC and SAML single sign-on, identity-provider group role mapping and organization-wide two-factor authentication policies provide additional access controls. Together these features make Enterprise relevant to compliance-focused teams, but entitlements are assigned individually by license key, so buyers should confirm which controls are included.

Search and export are practical strengths: teams can find messages and attachments with full-text search and export mail in EML format. Bulk import of PST, EML and MBOX files also gives organizations a route to bring existing archives into the system.

Pricing

The self-hosted Open-source edition costs nothing and includes community support. It is the no-cost option for teams that can work without Enterprise features and do not require the included first-year commercial updates and support.

Enterprise Edition costs €14, paid once, billed as a one-time payment per seat, with each seat representing an archived mailbox. The license is perpetual, the first year of updates and support is included, and larger seat counts receive a lower per-seat rate. After support lapses, the license and Enterprise features continue working, but updates and technical support stop. This structure may suit buyers who prefer a one-time license, though future maintenance and support require attention.

Enterprise features are entitled individually by license key, so the Enterprise price does not by itself establish that every feature is included. Check the key’s entitlements before purchasing, especially if journaling, legal holds or particular access controls are essential.

Platforms

Open Archiver Enterprise supports API, Linux, self-hosted and web use. Docker Compose deployment on a server or local machine fits teams able to manage their own hosting rather than those seeking a purely managed archive.

Who it's for

It is a strong fit for organizations that need searchable email retention, recipient-level journaling and compliance controls while keeping the archive and keys on infrastructure they control. The plain EML storage, EML export and bulk-import support also help teams that value portability. It is less suitable for buyers who want a hosted service or who cannot take responsibility for self-hosting and ongoing operations.

Pros and cons

Pros

• Customer-controlled hosting keeps emails, the index and encryption keys on infrastructure the organization controls.
• Recipient-level journaling includes BCC recipients, adding capture beyond mailbox synchronization.
• Perpetual, one-time per-mailbox licensing avoids a recurring license charge, and larger seat counts receive lower per-seat rates.
• Plain EML storage, EML export and imports from PST, EML and MBOX support portability and migration.

Cons

• Self-hosting makes deployment and operation the customer's responsibility.
• Enterprise capabilities depend on individual license-key entitlements, so the edition name alone does not guarantee every feature.
• Updates and technical support stop when support lapses, despite the perpetual license remaining active.

Alternatives

Email Archiving Software is a useful starting point for comparing options across the category.

• Google Drive is a better fit for general cloud file storage, with up to 15 GB included free for each Google account; it is not positioned here as an email archive.
• VM Backup is the more relevant choice for protecting virtual machines, with a free edition capped at two VMs per host and a 30-day fully featured trial.
• MessageSolution Enterprise Email Archive is another enterprise archiving option, with quote-based pricing tied to organization size and a $600 annual maintenance minimum.
• OpenText Retain Unified Archiving is an alternative for organizations evaluating a paid archiving product with broader listed platform support, including Android, iOS, Windows and web.
• Jatheon Cloud may suit teams preferring cloud delivery, with annual billing per user, unlimited storage and no egress fees at exit.
• MailArchiva is worth considering for teams comparing freemium, self-hosted archives; its on-premise license is a one-time per-mailbox fee, with first-year support mandatory and annual support thereafter.
• Mimecast Data Leak Prevention is the more relevant option when the need is SaaS or cloud exfiltration detection rather than email archiving; its Professional plan includes one detector and 30 days of historical activity.
• Proofpoint Enterprise Archive is another paid enterprise archiving option to compare.

Verdict

Choose Open Archiver Enterprise if your organization needs searchable, portable email records, recipient-level journaling and compliance controls while retaining control of the hosting environment. The perpetual per-mailbox license and customer-controlled data are compelling for self-hosting teams. Look elsewhere if you need a managed service, or if the operating burden and feature-by-feature license entitlements do not fit your requirements.