K-9 Mail

K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable...

Free
Open Source
Android
Android Tablet

K9 is an open source email client for Android with multifolder sync, email signatures, Bcctoself, returnaddress configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.

Links to official K-9 Mail sites

GitHub
Official Website

Features

Privacy focused Ad free Multiple Account support PGP Encryption

The Best 34 K-9 Mail Alternatives

1709 Like

Thunderbird

thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. the project strategy is modeled after mozilla firefox.

Free Open Source Windows Linux BSD Mac Haiku

Customizable Extensible by Plugins/Extensions Portable Integrated Chat Built in RSS reader Calendar integration Free API Import from Google Reader Integrated Web Browser Multiple Account support Export to OPML Import feeds from OPML POP3 Support Tabbed interface
303 Like

Microsoft Office Outlook

Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

Commercial Mac OS X Windows Android iPhone Android Tablet iPad Web Windows Phone

Built in Calendar Dark theme Signature with image
97 Like

Opera Mail

Opera Mail powerfully organizes, indexes, and sorts your messages. It has spam filtering (both automated and Bayesian), supports POP3 and IMAP, newsgroups as well as Atom and RSS feeds.

Free Mac OS X Windows

Portable Integrated Spam Protection Built in RSS reader Message Filtering
75 Like

Claws Mail

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 ...

Free Open Source Windows Linux BSD Xfce

Customizable Extensible by Plugins/Extensions Support for IMAP Multiple languages Built in RSS reader Multiple Account support Lightweight Content Filtering
71 Like

Zoho Mail

Zoho Mail is a webmail service built with the needs of a modern business in mind. It provides features for business users to communicate effectively while catering to the customization and mailbox management needs of IT administrators.

Freemium Android iPhone Web

Integrated Spam Protection Custom domain Two factor authentication Mail filtering
54 Like

Airmail

Airmail is a lightweight and lightning fast mail client for Mac. Feature list: Accounts: - Unified Inbox and folders - Multi Account with editable html signatures.

Commercial Mac OS X iPhone iPad Apple Watch

Customizable Multiple Account support Lightweight Dropbox integration Fullscreen support
51 Like

Spark

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.

Free Mac OS X iPhone iPad Apple Watch

Calendar integration Export to PDF
38 Like

Newton Mail

Newton is a fully featured mail client available for Android, iOS, macOS and Windows. Works for watch too. It's based on cloud so you can connect it to any account and get fast search, push notifications, read receipts (PREMIUM), etc .

Commercial Mac OS X Windows Android iPhone Android Tablet iPad Windows RT Apple Watch

Sync between devices Multiple languages Conversation view Salesforce integration Combined email cloud syncing Focused Inbox Real time pushing
21 Like

Icedove

icedove is the thunderbird email client rebranded by debian .

Free Open Source Linux Xfce

Extensible by Plugins/Extensions Integrated Chat Built in RSS reader Export to OPML Import feeds from OPML Tabbed interface
20 Like

Astro

Modern email and calendar apps for Mac, iOS, Android, Slack and Alexa, powered by Artificial Intelligence. Astro keeps you focused on what's most important.

Free Android iPhone iPad Mac Slack Amazon Echo (Alexa Voice Service)

Calendar integration Multiple Account support Email tracking Google Calendar integration Snooze reliability
17 Like

Mailspring

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.

Freemium

Customizable Extensible by Plugins/Extensions Support for IMAP Sync Contacts Multiple Account support Drag n drop Support for Themes Dark theme Conversation view Unified inbox Email tracking Email Analytics Email tracking & analytics
17 Like

TypeApp

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...

Free Personal Android iPhone Android Tablet iPad Android Wear Kindle Fire

Multiple Account support Live Push Notifications Unified inbox
14 Like

WorkSpace

WorkSpace is a comprehensive online solution for reading and managing your emails, contacts, calendars, tasks, and Internet favorites.

Commercial Web
8 Like

Canary Mail

Canary is an exciting new email client for Mac that offers a full set of powerful features with one key difference - your emails are not stored on a 3rd party server. ...

Commercial Mac OS X iPhone
7 Like

Mail Wise

Mail Wise – Read Just What You Need. The best conversation threads ever. A free email client that transforms messy emails into clean and clear conversations. Get all...

Freemium Android
5 Like

SlideMail

Making email better through artificial intelligence.

Free iPhone
4 Like

Agenda Mahala

Agenda Mahala is a great website to Learn English. On Agenda Mahala we have great English Courses, and both Level 1 and Level 2 are completely free. You also get an online notebook to keep the lesson appointments.

Free Web
2 Like

ProfiMail

ProfiMail is a powerful email client for mobile phones. It allows you to read your mail on the go, and send text with attachments directly from your phone. Send photos, recorded sound or simply text messages to friends, from anywhere.

Freemium Android Android Tablet Windows Mobile S60
1 Like

Pawnmail

Email hosting for custom domains.

Free Web

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K-9 Mail

Links to official K-9 Mail sites

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The Best 34 K-9 Mail Alternatives

Thunderbird

Microsoft Office Outlook

Opera Mail

Claws Mail

Zoho Mail

Airmail

Spark

Newton Mail

Icedove

Astro

Mailspring

TypeApp

WorkSpace

Canary Mail

Mail Wise

SlideMail

Agenda Mahala

ProfiMail

Pawnmail

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