K-9 Mail Alternatives for Windows
K-9 Mail is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is Thunderbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to K-9 Mail and 17 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to K-9 Mail are Betterbird, Microsoft Outlook, Spark Mail and Mailspring.
filter to find the best alternatives
K-9 Mail alternatives are mainly Email Clients, but if you're looking for Calendar Apps or Contact Managers you can filter on that. Other popular filters include Android + Open Source. These are just examples - use the filter bar below to find more specific alternatives to K-9 Mail.- Email Client
- Free • Open Source
- 84 Thunderbird alternatives
Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.
License model
- Free • Open Source
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Linux
- Android
- BSD
- AppImageHub
- Snapcraft
- Flathub
- PortableApps.com
- F-Droid
- Haiku
- Homebrew
- Chocolatey
Comments about Thunderbird as an Alternative to K-9 Mail
- 27 Betterbird alternatives
Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.
License model
- Free • Open Source
Application types
Country of Origin
Germany
EU
Platforms
- Mac
- Windows
- Linux
- Flathub
- Chocolatey
- 128 Microsoft Outlook alternatives
Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.
License model
- Paid • Proprietary
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Apple Watch
- Android Wear
Top Microsoft Outlook Features
Comments about Microsoft Outlook as an Alternative to K-9 Mail
Microsoft Office Outlook has more vulnerabilities and so far, seems more of a memory hogger on my device than K-9 Mail. Thank you, K-9 Mail!
If you use outlook for another email it will strore the password on a Microsoft server
- 61 Spark Mail alternatives
E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more.
License model
- Freemium • Proprietary
Application types
Country of Origin
Ukraine
Platforms
- Mac
- Windows
- Android
- iPhone
- iPad
- Apple Watch
Top Spark Mail Features
Comments about Spark Mail as an Alternative to K-9 Mail
abogawatSpark is one of the most polished email clients out there, with multi-platform support and an excellent feature set. The free version is good enough for most people.
- 42 Mailspring alternatives
Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.
License model
- Freemium • Open Source
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Linux
- Arch Linux
- Fedora
- Ubuntu
- 62 Claws Mail alternatives
Claws Mail is an email client (and news reader), based on GTK+, featuring
Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility Robustness and stability.
- 61 Canary Mail alternatives
Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!
License model
- Freemium • Proprietary
Application types
Country of Origin
United Kingdom
Platforms
- Mac
- Windows
- Android
- iPhone
- Android Tablet
- iPad
- Apple Watch
- 30 BlueMail alternatives
BlueMail is a modern, mobile first, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP,Exchange,POP3.
License model
- Free Personal • Proprietary
Application type
Country of Origin
United States
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Chrome OS
- Android Tablet
- iPad
- Apple Watch
LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.
License model
- Free • Open Source
Application type
Country of Origin
India
Platforms
- Mac
- Windows
- Linux
DiscontinuedRepository marked as archived as of Dec 24, 2022. No new releases since May 26, 2022.
LucaMail Features
- 57 TypeApp alternatives
TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.
License model
- Free Personal • Proprietary
Application type
Country of Origin
United States
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Android Wear
- Kindle Fire
Nylas Mail Lives is a fork of Nylas Mail that fixes many longstanding issues, improves the client experience, and is committed to publish new releases.
DiscontinuedOn its github page it states it is archived and is no longer maintained.
Nylas Mail Lives Features
- 58 EmailTray alternatives
EmailTray is a smart email client and an email notifier for POP3 and IMAP email accounts, including Gmail, Hotmail, Yahoo mail and AOL. EmailTray intelligently ranks messages, prioritizes them into 4 Inboxes and alerts you only to the most important.
EmailTray Features
A really great client used by many, popular because it supports almost every mail provider (not proton ?), and mail providers provide documentation to integrate with Thunderbird. I recommand