Monomail

7.1easy start · #53of 143
in Email clients

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Runs on Android.

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Monomail is ranked #53 of 143 in email clients on The Geeks Club. It runs on Android. There is a free plan.

Monomail plans and pricing

All plans

GitHub / F-Droid APK Free No push notifications · Gmail Google OAuth sign-in restricted; Outlook and IMAP/SMTP work monomail.millosaurs.me · 11 Oct 2026

Google Play Store Paid open testing · full features github.com · 11 Oct 2026

Compared on email clients

Free plan: Yes
App coverage: mobile
Account limit: 10 accounts
Unified inbox: Yes
Offline access: Yes
Scheduled sending: Yes

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The record

Product: Monomail is a monochrome email client for Android.
Accounts: It supports up to 10 Gmail, Outlook, or IMAP accounts with a unified inbox option.
Email features: Features include threaded conversations, sender grouping, snooze, scheduled send, undo send, templates, and attachments.
Search: Search includes local filtering by subject, sender, and snippet plus paginated server-side API search.
Offline use: The app uses Room and SQLCipher for local caching and says it works offline.
Integrations: Account connections include Gmail, Microsoft Graph for Outlook, and IMAP/SMTP, with presets for Gmail, Outlook, Yahoo, Zoho, and custom providers.
Push notifications: Push support uses Gmail Pub/Sub, Outlook webhooks, and IMAP IDLE; the GitHub build lacks push notifications.
Encryption: The app supports PGP key generation, import/export, automatic decryption and signature verification, and outgoing encryption and signing.
Local security: The maker says sensitive data is encrypted at rest using Android Keystore and encrypted storage, and email data is processed locally without Monomail servers.
Open source: Monomail is licensed under GPL-3.0 and its Kotlin source is publicly available.
Platform requirement: The app requires Android 8.0 (API 26) or later.
GitHub build limitation: The maker says the GitHub build restricts Gmail sign-in through Google OAuth, while Outlook and IMAP/SMTP work.
Intended use: The terms say the app is for personal, non-commercial use and is not intended for enterprise or highly critical communications.
Support: The maker directs users to Discord for updates, bug reports, and developer chat.
Price from: Free

Where it ranks on The Geeks Club

Best Email Clients in 2026#53 of 143

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Sources

github.com/shrivatsav-org/monomail· checked 11 Oct 2026
monomail.millosaurs.me/pp· checked 11 Oct 2026
monomail.millosaurs.me· checked 11 Oct 2026
monomail.millosaurs.me/tos· checked 11 Oct 2026