Open Archiver Enterprise
openarchiver.com
What it is
Open Archiver Enterprise keeps company email searchable and tamper-evident on infrastructure controlled by the organization. It connects to Google Workspace, Microsoft 365 and IMAP, and can import PST, EML and MBOX files in bulk. Enterprise journaling records unmodified messages for each recipient, including BCC recipients, alongside mailbox synchronization. Full-text search covers email and attachments, with EML export and eDiscovery tools. Retention policies, legal holds, a hash-chained audit log and integrity reports support GoBD and GDPR-related workflows. Security options include AES-256 encryption for archived files, OIDC and SAML single sign-on, group role mapping from an identity provider, and organization-wide two-factor authentication policies. The vendor says email, the index and encryption keys remain on customer-controlled servers; messages are stored as plain.eml files. The self-hosted open-source edition is free. Enterprise is a perpetual, one-time license per archived mailbox, listed at €14, paid once. The first year of updates and support is included; after that, the license and features continue, but updates and technical support stop.
Spec sheet
- What it does
- Open Archiver is a self-hosted system for archiving, indexing, storing and searching email from Google Workspace, Microsoft 365 and IMAP sources.Read 15 Oct 2026 · docs.openarchiver.com
- Purpose
- Keeps a searchable, tamper-proof record of company email on infrastructure the organization controls.Read 4 Oct 2026 · openarchiver.com
- Deployment
- The installation guide describes deploying the web interface with Docker Compose on a server or local machine.Read 4 Oct 2026 · docs.openarchiver.com
- Security
- Enterprise supports AES-256 encryption of archived files, OIDC and SAML single sign-on, identity-provider group role mapping and organization-wide two-factor authentication policies.Read 4 Oct 2026 · openarchiver.com
- Compliance
- Enterprise includes retention policies, legal holds, a hash-chained audit log and integrity reports for GoBD and GDPR-related workflows.Read 4 Oct 2026 · openarchiver.com
- Support
- Enterprise includes email support and updates for the first 12 months; the free edition relies on GitHub and Discord community support.Read 15 Oct 2026 · openarchiver.com
- License
- The public GitHub repository identifies OpenArchiver as GNU Affero General Public License version 3.0 software.Read 15 Oct 2026 · github.com
- API authentication
- API clients can authenticate with short-lived login JWTs or long-lived API keys passed in the X-API-KEY header.Read 15 Oct 2026 · docs.openarchiver.com
- API rate limiting
- The API defaults to 100 requests per minute per IP and returns HTTP 429 when the limit is exceeded; environment variables can change the limits.Read 15 Oct 2026 · docs.openarchiver.com
- Audit log
- Enterprise adds a tamper-evident audit log and auditor-oriented integrity reports.Read 15 Oct 2026 · openarchiver.com
- Company founded
- The company record states that LogicLabs OÜ was established on 14 October 2022.Read 15 Oct 2026 · corpinfo.ee
- Company headquarters
- The company record lists Tartu mnt 67/1-13b, Tallinn, Estonia as the registered address.Read 15 Oct 2026 · corpinfo.ee
- Company legal name
- Estonian business data identifies the maker as LogicLabs OÜ, registry code 16593924.Read 15 Oct 2026 · corpinfo.ee
- Data control
- The product is self-hosted; the vendor says emails, index and encryption keys stay on servers the customer controls.Read 4 Oct 2026 · openarchiver.com
- Deduplication
- Message-level deduplication is included in both the open-source and Enterprise editions.Read 15 Oct 2026 · openarchiver.com
- Deployment portability
- Both editions use the same database schema, so an open-source deployment can be switched to Enterprise by changing the Docker image and license key without reimporting or reindexing.Read 15 Oct 2026 · openarchiver.com
- Documentation depth
- The documentation site includes installation, provider setup, search, indexing, upgrades, troubleshooting, enterprise features and a detailed API reference.Read 15 Oct 2026 · docs.openarchiver.com
- Edition limit
- Enterprise features are entitled individually by the license key, so a plan can include some Enterprise features and not others.Read 4 Oct 2026 · openarchiver.com
- Email journaling
- Enterprise supports real-time SMTP email journaling with per-recipient archiving and preservation of original messages.Read 15 Oct 2026 · openarchiver.com
- Encryption
- Enterprise encrypts archived files at rest with AES-256, while stored credentials are encrypted in both editions.Read 15 Oct 2026 · openarchiver.com
- Enterprise compliance
- Enterprise is marketed as preserving tamper-proof email records on the customer’s own servers for GoBD and GDPR requirements.Read 15 Oct 2026 · openarchiver.com
- Ingestion
- Connects to Google Workspace, Microsoft 365 and IMAP, and supports bulk import from PST, EML and MBOX files.Read 4 Oct 2026 · openarchiver.com
- Ingestion integrations
- Documented ingestion sources include Google Workspace, Microsoft 365, generic IMAP, OAuth mailboxes, EML, PST and Mbox files.Read 15 Oct 2026 · docs.openarchiver.com
- Installation model
- The recommended installation is Docker Compose, with bundled PostgreSQL, Valkey and Meilisearch services or externally managed equivalents.Read 15 Oct 2026 · docs.openarchiver.com
- Integrity verification
- The system records hashes for archived email and attachments and provides integrity verification functions.Read 15 Oct 2026 · openarchiver.com
- Journaling
- Enterprise email journaling captures unmodified messages per recipient, including BCC recipients, alongside mailbox sync.Read 4 Oct 2026 · openarchiver.com
- Legal hold
- Enterprise includes legal hold and eDiscovery search capabilities.Read 15 Oct 2026 · openarchiver.com
- Limit: folder controls
- Tuxoche notes that Open Archiver excludes spam by default but archives the trash folder, which the reviewer considers undesirable.Read 15 Oct 2026 · tuxoche.de
- Limit: large Mbox reliability
- A TerraMaster user reported spending weeks trying to make Open Archiver reliably process a 14 GB Mbox file before giving up.Read 15 Oct 2026 · reddit.com
- Limit: Redis configuration bug
- Tuxoche reports a documented error when the Redis service uses a non-default user and says it remained unfixed for nearly two months.Read 15 Oct 2026 · tuxoche.de
- Limit: resource use
- Kittsteiner observed memory above 5 GiB and CPU spikes up to 100% while importing more than 30,000 messages, attributing the high memory use mainly to attachment OCR.Read 15 Oct 2026 · kittsteiner.blog
- Limit: restore workflow
- Mizine says restoring a message requires downloading its EML file and manually importing it into a mail client rather than one-click IMAP restoration.Read 15 Oct 2026 · mizine.de
- Limit: verification concerns
- A Reddit commenter warned that silently lost PST messages would be more serious than slow search and requested per-mailbox counts and hash manifests after ingestion.Read 15 Oct 2026 · reddit.com
- Maker relationship
- Open Archiver’s contact page says the project is created and maintained by LogicLabs.Read 15 Oct 2026 · openarchiver.com
- Notable release
- The GitHub release notes for v0.6.0 list new ingestion and indexing environment variables and say existing duplicate emails are not removed automatically during upgrades.Read 15 Oct 2026 · github.com
- OCR
- Attachment content search can use OCR, and the installation documentation supports Apache Tika for advanced extraction.Read 15 Oct 2026 · docs.openarchiver.com
- Portability
- Emails are stored as plain .eml files, and the Enterprise page says customers can bulk import PST, EML and MBOX files.Read 4 Oct 2026 · openarchiver.com
- Praise: attachment search
- Mizine reports that Apache Tika and MeiliSearch can find terms inside PDF, DOCX and image attachments through OCR.Read 15 Oct 2026 · mizine.de
- Praise: data integrity
- Tuxoche highlights direct filesystem access to archived messages and checksum verification for each email and attachment.Read 15 Oct 2026 · tuxoche.de
- Praise: open formats
- A Kittsteiner review praises storage as EML files and describes the project as promising and completely open source.Read 15 Oct 2026 · kittsteiner.blog
- Public API
- The REST API uses the /api/v1 prefix and exposes authentication, archived-email, dashboard, ingestion, search and storage services.Read 15 Oct 2026 · docs.openarchiver.com
- Purchase terms
- The license is perpetual and paid once per archived mailbox; larger seat counts receive a lower per-seat rate.Read 4 Oct 2026 · openarchiver.com
- Retention API
- Enterprise exposes authenticated REST endpoints for creating, updating, deleting, listing and simulating retention policies.Read 15 Oct 2026 · docs.openarchiver.com
- Retention policies
- Enterprise retention rules can target messages by age, mailbox or label and apply scheduled deletion with an audit trail.Read 15 Oct 2026 · openarchiver.com
- Search
- The product provides full-text search across email and attachments, with conversation threading and advanced filters listed in the edition comparison.Read 15 Oct 2026 · openarchiver.com
- Single sign-on
- Enterprise SSO supports OpenID Connect and SAML 2.0, with providers including Okta, Microsoft Entra ID, Google Workspace, Keycloak, Authentik, Authelia and ADFS.Read 15 Oct 2026 · docs.openarchiver.com
- Storage backends
- The deployment can store data on a local filesystem or S3-compatible object storage.Read 15 Oct 2026 · docs.openarchiver.com
- System requirements
- The installation guide recommends Docker, Docker Compose and Git, with at least 4 GB RAM or 2 GB when PostgreSQL, Redis and Meilisearch are external.Read 15 Oct 2026 · docs.openarchiver.com
Plans and prices
Self-hosted Free free self-hosting open-source edition · self-hosted containers · community support · IMAP, PST, EML, Mbox, Microsoft 365 and Google Workspace ingestion Read 15 Oct 2026 · openarchiver.com
Enterprise Edition €14, paid once per seat; 1 year of updates and support included 500+ seats: €14.00/seat · 300–499: €17.00/seat · 100–299: €21.00/seat · 50–99: €26.50/seat · 25–49: €29.00/seat · 10–24: €38.00/seat · 5–9: €57.00/seat · 1–4: €65.00/seat · license never expires Read 15 Oct 2026 · openarchiver.com
Strong points and limits
Strong points
- Imports from Google Workspace, Microsoft 365 and IMAP
- Journaling captures BCC recipients
- Includes retention policies and legal holds
- Emails remain available as plain .eml files
Limits
- Enterprise costs €14, paid once
- Updates and support stop after the first year
- Enterprise features depend on the license key
Who it suits
It suits organizations that need a searchable email archive on infrastructure they control, with journaling, retention and legal holds. Teams should note that Enterprise features are licensed individually, so a license key may not include every feature.
Verdict
Open Archiver combines customer-controlled hosting with email search, journaling and compliance features. Check which Enterprise features are included in the license key and whether ongoing support is needed.
Where Specifiction places it
- Email Archiving Software#2 of 278.7
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