UnInbox review
An open-source shared inbox for teams that want collaboration without automation depth.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
UnInbox is an open-source collaborative email service for teams that want to handle conversations together rather than keep them in individual inboxes. Shared spaces let teammates collaborate on messages, add private comments, track progress with workflow statuses, and reply from shared addresses such as support@ or sales@. It is suited to teams looking for a focused shared inbox with visible source code, particularly those comfortable with a standalone email platform rather than a solution centered on a broad integration ecosystem.
The plans create a clear distinction between personal use and team collaboration. Free costs $0 per month and includes an @uninbox.me address, Personal Spaces, three workflows per space, seven-day raw email retention, and community/email support. Pro costs $12 per user per month, billed monthly, and adds unlimited custom domains, Teams, unlimited Shared & Public Spaces, SMTP and API access, conversation assignees, and priority chat support. Enterprise lists a 30-user minimum, dedicated instance, custom IP, SAML SSO, and ten-year conversation activity history and raw email retention. Its price is not stated here, so buyers should focus on the listed Pro rate when comparing entry costs.
The product's strength is the collaboration workflow: comments, shared-address replies, statuses, and assignees are directly relevant to teams managing incoming email. But UnInbox is a narrower choice for buyers who need that shared workspace, not a confirmed automation or app ecosystem. Assignment automation and integrations are not verified, and there are no verified official mobile apps. Self-hosting support is in development, so teams requiring a ready-to-run self-hosted deployment should not treat it as an established option. Choose UnInbox for shared email collaboration and open-source availability; consider alternatives if automation, integrations, or mobile access are central requirements.
UnInbox pros and cons
- Where it wins
- Shared spaces support team work on conversations and shared-address replies.
- Private comments and workflow statuses help teams coordinate email.
- Free plan; Pro adds custom domains, assignees, SMTP and API access.
- Where it doesn't
- Free includes only personal spaces and an @uninbox.me address.
- No verified assignment automation, integrations or official mobile apps.
- Self-hosting support is in development; Enterprise requires 30 users.
UnInbox fact sheet, pricing and score →
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