UnInbox

Open-source collaborative email for teams — manage shared inboxes, assign workflows, and comment on conversations.

Verified API available Free tier
Quick facts
What is it Open-source collaborative email for teams — manage shared inboxes, assign workflows, and comment on conversations.
Pricing Freemium — from $12/mo
Free tier Yes
Platform Web Application
API Yes
Best for Managing a shared support@ or sales@ email address as a team, Tracking email task statuses to avoid duplicate replies or missed messages
Domain registered 2023

Data updated Aug. 1, 2026

What does UnInbox do?

UnInbox is a collaborative email platform built for teams. It replaces the chaos of forwarding emails or dealing with long reply-all chains with shared spaces. In these spaces, team members can comment on email conversations and reply from a shared address, like support@ or sales@. It also lets you create an unlimited number of email addresses for different purposes, all managed from one place.

What makes UnInbox stand out is its focus on workflow and transparency. Each email conversation can be assigned a status, so everyone knows if a query is pending, in progress, or resolved. This eliminates the common problem of wondering if someone already replied. The platform is open-source, offering the option for self-hosting and customization. For businesses that need deeper integration, the Pro plan provides SMTP and API access.

This tool is a strong fit for small businesses, startups, and customer support teams that handle email collectively. It's useful for groups tired of using a single inbox password or messy forwarding rules. Real-world use includes a team managing customer inquiries through a shared help@ address while tracking who is handling what, or a startup using separate addresses for admin, billing, and partnerships without paying for multiple individual mailboxes.

#email workflow#open source#shared inbox#team productivity

Key features

What makes it stand out
01
Shared inboxes and spaces for team collaboration on email conversations
02
Workflow status tracking to see which emails are done and by whom
03
Infinite email addresses (like support@, sales@) under custom domains
04
SMTP and API access for custom integrations and automation
05
Open-source platform with self-hosting and customization options

Who is UnInbox for?

Who benefits most from this tool
Managing a shared support@ or sales@ email address as a team
Tracking email task statuses to avoid duplicate replies or missed messages
Creating separate email addresses for different business functions without extra cost

Pricing

Free tier available — start without a credit card

Free

Free
  • @uninbox.me email address
  • Personal Spaces
  • 3 Workflows per Space
  • 7 day raw email retention
  • Community/email support

Pro

$12.0/month

Everything in Plus, plus:

  • Everything in Plus
  • Unlimited Custom Domains
  • Teams
  • Unlimited Shared & Public Spaces
  • SMTP & API Access
  • Convo Assignees
  • Priority Chat Support
  • Video Call Support

Enterprise

Custom

Everything in Pro, plus:

  • 30 minimum users
  • 30 Users Minimum
  • Everything in Pro
  • Dedicated Instance
  • Custom IP
  • SAML SSO
  • 10 year convo activity history
  • 10 year raw email retention
  • Dedicated Onboarding
  • Org Wide Video Call Support

Trust & presence

Domain Domain registered 2023

Gallery

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