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

thunderbird is a free, open source, crossplatform email, news and instant messaging client. the project strategy is modeled after mozilla firefox.

it supports pop (storing mail locally on your hard drive so that it can be accessed without an internet connection), and imap. it features excellent mail filter capabilities and management.

thunderbird has strong support for using multiple accounts and identities, including automated signature features.

chat functionality is built in, so you can enjoy realtime conversation with your contacts, right from your favorite messaging application, with multiple supported networks. thunderbird makes it easy to search through both past conversations and received emails.

thunderbird can also function as an rss/atom feed reader, and has a large selection of addons that extend it with calendar support, pgp support, integration with online services and much more.

available also as portable app: http://portableapps.com/apps/internet/thunderbird_portable

Links to official Thunderbird sites

GitHub
Twitter
Facebook
Official Website

Features

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

The Best 14 Thunderbird Alternatives

multiple-account-support filter is active.

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Extensible by Plugins/Extensions Support for IMAP Multiple languages Built in RSS reader Multiple Account support POP3 Support Tabbed interface Onedrive integration Dropbox integration Box.com integration
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Customizable Extensible by Plugins/Extensions Support for IMAP Multiple languages Built in RSS reader Multiple Account support Lightweight Content Filtering
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Sync Contacts Multiple Account support Email tracking Email scheduling
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Calendar integration Multiple Account support Email tracking Google Calendar integration Snooze reliability
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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
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InboxZero

Email conversations InboxZero automatically gathers your emails in conversations by contact. You can quickly browse all your emails exchanged with a contact in one...

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Portable Multiple Account support POP3 Support

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Thunderbird

Links to official Thunderbird sites

Features

Categories

Tags

The Best 14 Thunderbird Alternatives

Mailbird

K-9 Mail

Postbox

Claws Mail

Airmail

Polymail

Astro

Mailspring

TypeApp

sup

Missive

Koma-Mail

Nylas Mail Lives

InboxZero

Search app for alternative

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