Side by side
K-9 Mail vs QuickMail
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 Android
K-9 Mail provides a broad Android email feature set without a charge, including unified account handling, offline access, and encrypted-mail support. Its Android-only scope, absent calendar and scheduling tools, and outdated manual are important limitations.
Visit K-9 Mail Free plan Windows
QuickMail combines accessible Windows email with calendar, contacts, offline reading, and configurable keyboard controls. Its Windows-only availability and lack of a trial are the main boundaries.
Visit QuickMailThe facts
| K-9 Mail | QuickMail | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android | Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | k9mail.app | github.com |
| On email clients | #76 of 142 | #72 of 142 |
K-9 Mail: what it does well
- Free Android email client
- Unified inbox for multiple accounts
- Local and server-side search
- Offline access available
- OpenPGP support with OpenKeychain
What to know first
- Android-only platform
- No calendar tools
- No scheduled sending
- Current user manual abandoned
QuickMail: what it does well
- Free plan with no trial requirement
- Unified inbox and multiple message views
- Works with major and IMAP or POP3 accounts
- Offline reading, rules, templates, and search
- Screen-reader support without custom scripts
What to know first
- Windows only
- No free trial is offered
- Requires Windows 10 or 11
- Remote message content is blocked by default
Alternatives to K-9 Mail Alternatives to QuickMail The whole list