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Everyone
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About this app

Open Mailbox - Open-source email, without the middleman.

Open Mailbox is a free, open-source email client for iOS and Android. Manage all your email accounts in one place, with a modern interface, offline access, and no intermediary server.

All your emails in one place
- Unified inbox across multiple accounts
- Supports Gmail, Yahoo, OVHcloud, IONOS, and other IMAP/SMTP providers
- Smart inbox categories: Primary, Transactions, Updates, and Promotions
- Full-text search across your mailboxes

Fast and intuitive
- Read and search emails offline
- Swipe gestures and quick actions
- Instant changes with background synchronization
- Light and dark modes
- Attachment support and contact suggestions

Privacy by design
- Direct connection to your email provider, without an intermediary server
- No additional account required
- Emails stored locally on your device
- Remote images blocked by default

100% open source

Open Mailbox is distributed under the Mozilla Public License 2.0. Its source code is publicly available for anyone to inspect and contribute to.

An existing email account is required.
Open-source email client. All your inboxes, no intermediary server.
Updated on
Nov 12, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
Content rating
Everyone
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App support

Phone number
+33652877840
About the developer
SOLUCE TECHNOLOGIES
development@soluce-technologies.com
8 RUE FRANCOIS VILLON 31700 BLAGNAC France
+33 6 52 87 78 40