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 19 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to K-9 Mail are Microsoft Office Outlook, Spark Mail, Mailspring and Delta Chat.
K-9 Mail alternatives are mainly Email Clients but may also be Calendar Apps or WebMail Providers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of K-9 Mail.Thunderbird
Do you think this is a good alternative?YesNo- Free • Open Source
- Email Client
- Calendar App
93 alternatives to Thunderbird- Mac
- Windows
- Linux
- BSD
- AppImageHub
- Snapcraft
- Flathub
- PortableApps.com
- Haiku
- Homebrew
- Chocolatey
Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
Thunderbird Features
Thunderbird vs K-9 Mail opinions
Microsoft Office Outlook
Do you think this is a good alternative?YesNo- Paid • Proprietary
- Email Client
- Calendar App
135 alternatives to Microsoft Office Outlook- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- Windows Phone
- iPad
- Apple Watch
- Android Wear
Microsoft Outlook, part of the Microsoft 365 (Office) (not to be confused with Microsoft Outlook Express), is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.
Microsoft Office Outlook Features
Microsoft Office Outlook vs K-9 Mail opinions
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!
5Spark Mail
Do you think this is a good alternative?YesNo- Freemium • Proprietary
- Email Client
- Calendar App
58 alternatives to Spark Mail- Mac
- Windows
- Android
- iPhone
- iPad
- Apple Watch
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.
Spark Mail Features
Mailspring
Do you think this is a good alternative?YesNo- Freemium • Open Source
- Email Client
45 alternatives to Mailspring- Mac
- Windows
- Linux
- Arch Linux
- Fedora
- Ubuntu
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.
Mailspring Features
Delta Chat
Do you think this is a good alternative?YesNo- Free • Open Source
- Encrypted Chat App
- Instant Messenger
- Group Chat App
56 alternatives to Delta Chat- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- FLATHUB
- F-Droid
Delta Chat looks and feels like other popular messenger apps, but does not involve centralized control, tracking or selling you, friends, colleagues or family out to large organizations. "Privacy by Design" has never been more fun.
Delta Chat Features
Claws Mail
Do you think this is a good alternative?YesNo- Free • Open Source
- Email Client
- Calendar App
- News Reader
88 alternatives to Claws Mail- Windows
- Linux
- BSD
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.
Claws Mail Features
Betterbird
Do you think this is a good alternative?YesNo- Free • Open Source
- Email Client
28 alternatives to Betterbird- Windows
- Linux
- Flathub
Betterbird is a fine-tuned version of Mozilla Thunderbird, Thunderbird on steroids, if you will.
Betterbird Features
Postbox
Do you think this is a good alternative?YesNo- Paid • Proprietary
- Email Client
70 alternatives to Postbox- Mac
- Windows
Postbox is an email application that helps you organize your work life and get stuff done.
Postbox Features
Canary Mail
Do you think this is a good alternative?YesNo- Freemium • Proprietary
- Email Client
- Calendar App
61 alternatives to Canary Mail- Mac
- Windows
- Android
- iPhone
- Android Tablet
- iPad
- Apple Watch
Email, meet AI. Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!
Canary Mail Features
BlueMail
Do you think this is a good alternative?YesNo- Free Personal • Proprietary
- Email Client
27 alternatives to BlueMail- Mac
- Windows
- Linux
- Android
- iPhone
- Chrome OS
- Android Tablet
- iPad
- Apple Watch
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.
BlueMail Features
BlueMail vs K-9 Mail opinions