Side by side
Horde IMP vs Kanmail
Both stand on email clients. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidiPhoneSelf-hosted+1
Horde IMP provides a broad, self-hosted webmail feature set with multiple interfaces and Horde integrations. Its infrastructure prerequisites and POP3 limitations should be checked before deployment.
Visit Horde IMP Free plan LinuxMacWindows
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.
Visit KanmailThe facts
| Horde IMP | Kanmail | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, iPhone, Self-hosted, Web | Linux, Mac, Windows |
| Lowest paid plan | Free or on request | Personal: $49, paid once |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | horde.org | kanmail.io |
| On email clients | #39 of 142 | #43 of 142 |
Horde IMP: what it does well
- Supports IMAP and POP3 browser access
- Includes HTML composition and drag-and-drop attachments
- Offers S/MIME and PGP encryption and signatures
- Integrates with Horde filtering, contacts, and calendar apps
- Provides mobile and text-only browser interfaces
What to know first
- Requires a working Horde installation
- Needs an IMAP or POP3 server and mail transport
- POP3 disables on-demand filtering, searching, and sorting
- OpenSSL is required for specified secure connections
Kanmail: 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
Alternatives to Horde IMP Alternatives to Kanmail The whole list