K 9 Alternatives

Posted in Software

15 best k 9 alternatives for Windows, Mac, Linux, iPhone, Android and more. K 9 alternative list source: github.com

15 alternativesFree, Freemium, Open Source, Commercial +1 Mac, iPhone, Android, Windows, Linux +3

What is K 9?

15 best k 9 alternatives for Windows, Mac, Linux, iPhone, Android and more. K 9 alternative list source: github.com

Who should use these alternatives?

These alternatives are useful when you want to compare similar tools by platform support, licensing signals, practical features, and archived community feedback before visiting official product websites.

Pricing and license note

Pricing, license terms, and availability can change. Check the official website for current pricing and product terms before making a decision.

Safety and legitimacy note

Alternative.tips is an informational alternatives directory. We do not endorse unsafe, illegal, spying, hacking, piracy, cracked software, or unauthorized access tools.

Originally added: September 17, 2018

Compare K 9 alternatives

Compare top-ranked K 9 alternatives by score, license, and supported platforms.

Alternative	Score	License	Platforms
Thunderbird	100% 3615 archived votes	Free, Open Source	Windows, Mac, Linux
Microsoft Office Outlook	99% 643 archived votes	Freemium	Web, Windows, Mac, Android, iPhone
Opera Mail	97% 195 archived votes	Free	Windows, Mac
Zoho Mail	96% 161 archived votes	Freemium	Web, Android, iPhone
Claws Mail	98% 157 archived votes	Free, Open Source	Windows, Linux
Spark	98% 133 archived votes	Free	Mac, iPhone, iPad
Airmail	98% 120 archived votes	Commercial	Mac, iPhone, iPad
Mailspring	92% 72 archived votes	Freemium	Windows, Mac, Linux
Hiri	83% 48 archived votes	Commercial	Windows, Mac, Linux
TypeApp	90% 42 archived votes	Free, Personal	Android Tablet, Android, iPhone, iPad
Aqua Mail	83% 24 archived votes	Freemium	Android Tablet, Android
Canary Mail	64% 22 archived votes	Commercial	Mac, iPhone

3615

Thunderbird

Score: 100%

FreeOpen SourceWindowsMacLinux

Thunderbird is a free, open-source, cross-platform email, news and instant messaging client. The project strategy is modeled after Mozilla Firefox. Features:Free,Open,Source,Mac,Windows,Linux,BSD,

643

Microsoft Office Outlook

Score: 99%

FreemiumWebWindowsMacAndroidiPhone

To manage as part of the Microsoft Office Suite, Outlook E-Mail, calendar, contacts, and tasks from the personal information manager that allows you. Features:Freemium,Mac,Windows,Web,Android,iPhone

Alternatives

195

Opera Mail

Score: 97%

FreeWindowsMac

Opera mail force organized fully, indexes, and queues messages. (Both automated and Bayesian) spam filtering, supports POP3 and IMAP, as messages Features:Free,Mac,Windows,

Alternatives

161

Zoho Mail

Score: 96%

FreemiumWebAndroidiPhone

6.8 E-Mail-webmail is a service built with the needs of modern business in mind. While catering for the business user, you can communicate in an effective way. Features:Freemium,Web,Android,iPhone

Alternatives

157

Claws Mail

Score: 98%

FreeOpen SourceWindowsLinux

Claws Mail-and News-Reader), GTK+ - based, this is a fast reaction with an elegant e-mail client interface, simple configuration and advanced Features:Free,Open,Source,Windows,Linux,BSD

Alternatives

133

Spark

Score: 98%

FreeMaciPhoneiPad

With all the great features of the e-mail application: (Long/Short), beer, confectionery, cloud, and support for various E-Mail services (multiple) attachments.add Features:Free,Mac,iPhone,iPad,Apple,Watch

120

Airmail

Score: 98%

CommercialMaciPhoneiPad

The lighter the plane is the fastest E-mail client for Mac and Lightning. Unified inbox and folders-editable HTML pages with Multi-Account feature list: accounts: Features:Commercial,Mac,iPhone,iPad,Apple,Watch

Alternatives

Mailspring

Score: 92%

FreemiumWindowsMacLinux

Improve the efficiency and mainspring Mac, Windows and Linux for a beautiful, fast E-Mail client, better you send an e-mail. An optional pivot is free to use and pro Features:Freemium,Mac,Windows,Linux,Arch,Linux,Fedora

Alternatives

Hiri

Score: 83%

CommercialWindowsMacLinux

Fast, good-looking the e-mail client. Ms outlook with some unique and smart features easier. ONLY with Outlook / Exchange to work. Features:Commercial,Mac,Windows,Linux

Alternatives

TypeApp

Score: 90%

FreePersonalAndroid TabletAndroidiPhoneiPad

A TypeApp allfree, very nice universal E-Mail application, able to manage an unlimited number of E-mail accounts from various providers, allowing for smart push Features:Free,Personal,Android,iPhone,Android,Tablet,iPad,Android,Wear

Aqua Mail

Score: 83%

FreemiumAndroid TabletAndroid

Aqua mail internet and Exchange mail, for Android 4.0.3 and higher e-mail application. Popular e-mail services, easy, Automatic Setup: Gmail, Yahoo, Hotmail Features:Freemium,Android,Android,Tablet

Alternatives

Canary Mail

Score: 64%

CommercialMaciPhone

Canary your e-mail stored on third-party server that is not full for Mac is a powerful set of functions, there is an important difference an exciting new e-mail client. Features:Commercial,Mac,iPhone

Alternatives

BlueMail

Score: 81%

FreePersonalAndroid TabletAndroidiPhoneiPad

Blue mail is a stylish design, all of the accounts: IMAP, exchange, POP3 and unified inbox with support for a modern, mobile-first, powerful E-Mail management tool. Features:Free,Personal,Android,iPhone,Android,Tablet,iPad,Apple,Watch

Alternatives

FairEmail

Score: 70%

FreeOpen SourceAndroid TabletAndroid

This e-mail application, interviews will not be displayed and a valid e-mail application: mailbox manage messages show or if its just a long Features:Free,Open,Source,Android,Android,Tablet,F-Droid

Alternatives

Kube

Score: 17%

FreeOpen SourceLinux

QtQuick-cube with high-performance, low-resource base is based on the modern communication and collaboration client. Offers online and offline access Features:Free,Open,Source,Linux

Alternatives