Kanmail vs Mailspring
Kanmail
kanmail.ioMailspring
getmailspring.comSide by side
| Figure | Kanmail | Mailspring |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Plans published | 4 | 4 |
| Spec score · Email clients | 8.5 (#25) | 9.0 (#9) |
| App coverage | desktop | desktop |
| Free plan | No | Yes |
| Offline access | Yes | Yes |
| Product | Kanmail turns email into a kanban board, with accounts in one view and emails as movable cards. | Mailspring is a native desktop email client for people who take email seriously. |
| Search | Search covers every account and folder; Gmail queries use Gmail's search engine, while other accounts use full-text search. | Mailspring indexes email to support advanced Gmail-style searches across connected accounts. |
| Security | The maker says sensitive Google user data is encrypted in transit using TLS and stored locally on the device. | Email credentials are stored in the system keychain, and Mailspring says it does not transmit, store, or process email in the cloud. |
| Support | The support page directs users to documentation, GitHub issues, or email support at [email protected]. | For security vulnerability reports, the maker gives [email protected] and says users can expect a response within a few hours. |
| Unified inbox | Yes | Yes |
Plans
Kanmail
- EvaluatePrice not published
- Free evaluationFree
- Personal$49, paid once
- BusinessPrice not published
Mailspring
- BasicPrice not published
- Mailspring Pro$8 a month
- FreeFree
- Mailspring Pro$8 a month
In their own words
Mailspring
Mailspring is a desktop email client for Linux, macOS, and Windows, with support for multiple accounts in one inbox. It connects to Gmail, iCloud, Office 365, Fastmail, Outlook.com, Yahoo!, and IMAP/SMTP providers, and indexes email for advanced Gmail-style searches across connected accounts. The client works offline and supports scheduled sending. Its free features include undo send, spell and grammar checking, custom themes, dark mode, and localization. Pro adds read receipts, link tracking, send later, follow-up reminders, templates, contact profiles, snoozing, and mailbox insights. Mailspring connects to mail providers through IMAP and to calendars and contacts through CalDAV and CardDAV, though calendar tools are not included in the app. It can translate drafts into Spanish, Russian, simplified Chinese, French, and German, and offer to translate incoming messages. Mailspring says credentials are kept in the system keychain and email is not processed in the cloud. The free plan is available; Pro costs $8 a month, billed monthly.