KMail vs Mailspring
KMail
apps.kde.orgMailspring
getmailspring.comSide by side
| Figure | KMail | Mailspring |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| Plans published | 1 | 4 |
| Spec score · Email clients | 8.4 (#28) | 9.0 (#9) |
| App coverage | desktop | desktop |
| Calendar tools | Yes | No |
| Free plan | Yes | Yes |
| Headquarters | Berlin, Germany | San Francisco, California, United States |
| Integrations | KMail connects with KOrganizer for meeting invitations and KAddressBook for address completion, avatars, and cryptographic preferences. | Mailspring syncs directly with mail providers using IMAP and with calendars and contacts using CalDAV and CardDAV. |
| Offline access | Yes | Yes |
| Scheduled sending | Yes | Yes |
| Support | KDE lists the KMail Handbook, forum, user mailing list, and Libera.Chat channel as help options. | 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
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.