Kanmail
What Kanmail is
Kanmail is a desktop email application for macOS, Windows, and Linux that arranges messages as movable cards on a kanban board. It combines accounts in one inbox and supports offline reading of cached messages. Users can build columns from folders in any combination and save workflow views. Supported providers listed by the maker include Gmail, Outlook, iCloud, Yahoo, Fastmail, and Proton Mail. Search spans every account and folder; Gmail searches use Gmail’s own search engine, while other accounts use full-text search. Kanmail uses IMAP IDLE for incoming mail and is described as a native Go application using the system webview, with an app size of about 40 MB. The maker says message content and credentials stay on the device, sensitive Google data uses TLS in transit, and tracking pixels and remote images are removed automatically. Passwords and OAuth tokens are stored in macOS Keychain or Windows Credential Manager. Evaluation is free without a card or time limit; Personal costs 49.00 USD one time.
Who it suits
Kanmail suits people who want desktop email organised as kanban cards across several providers. Its evaluation option also suits users who need full features without a time limit before purchasing.
What it does well
- Kanban columns can combine folders
- Unified inbox across supported providers
- Cached messages available offline
- Tracking pixels and remote images stripped
- Personal license covers unlimited devices
What to know first
- Personal plan costs 49.00 USD one time
- License required beyond evaluation
- Desktop app only
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Evaluate | Full app with every feature · All accounts and workflows · No card and no time limit | On request |
| Free evaluation | Free for as long as you need; no card or time limit · Full app and every feature · all accounts and workflows | Free |
| Personal | one time — yours forever · One user · unlimited devices · macOS, Windows and Linux · past and future v2 releases | $49, paid once |
| Business | per seat · annual · tiered by team size · For companies and organizations · licenses tied to devices · direct support from the team | On request |
As kanmail.io lists them, read 20 Sept 2026. The maker's own page has the final word.
Verdict
Kanmail combines multi-account email with board-based workflow views and local privacy controls. The free evaluation is generous, while continued personal use requires a one-time license.
Facts from Kanmail's own pages
- App coverage
- desktop · kanmail.io, 20 Sept 2026
- Boards
- Users can build columns from folders in any combination and save workflow views. · kanmail.io, 11 Oct 2026
- Business licensing
- The maker says personal licenses are for individual ownership and directs companies and organizations to business licenses. · kanmail.io, 11 Oct 2026
- Credentials
- Passwords and OAuth tokens are stored in macOS Keychain or Windows Credential Manager, according to the product site. · kanmail.io, 11 Oct 2026
- Desktop app
- Kanmail describes itself as a native Go app using the system webview, with an app size of about 40 MB. · kanmail.io, 11 Oct 2026
- Email providers
- The site lists Gmail, Outlook, iCloud, Yahoo, Fastmail and Proton Mail as supported accounts. · kanmail.io, 11 Oct 2026
- Free plan
- No · kanmail.io, 20 Sept 2026
- Maker
- The product site identifies Oxygem as its maker; Oxygem describes itself as a small team that designs and develops web applications, services and websites. · oxygem.com, 11 Oct 2026
- Offline access
- Yes · kanmail.io, 20 Sept 2026
- Privacy
- The maker says email content and credentials remain on users' devices and are not transmitted to external services. · kanmail.io, 11 Oct 2026
- Privacy controls
- Tracking pixels and remote images are stripped automatically, and the app displays a counter for blocked items. · kanmail.io, 11 Oct 2026
- Product
- Kanmail turns email into a kanban board, with accounts in one view and emails as movable cards. · kanmail.io, 11 Oct 2026
- Search
- Search covers every account and folder; Gmail queries use Gmail's search engine, while other accounts use full-text search. · kanmail.io, 11 Oct 2026
- Security
- The maker says sensitive Google user data is encrypted in transit using TLS and stored locally on the device. · kanmail.io, 11 Oct 2026
- Source code
- Kanmail's source code is publicly available, but a license is still required to use it beyond evaluation. · kanmail.io, 11 Oct 2026
- Support
- The support page directs users to documentation, GitHub issues, or email support at [email protected]. · kanmail.io, 11 Oct 2026
- Sync and offline
- The app uses IMAP IDLE for new mail and supports reading cached messages offline. · kanmail.io, 11 Oct 2026
- Unified inbox
- Yes · kanmail.io, 20 Sept 2026
Where Kanmail stands on Freedom251
- Email clients#43 of 142