Sylpheed

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylpheed uses GTK+ GUI toolkit.

Free
Open Source
Mac OS X
Windows
Linux
BSD

sylpheed is a simple, lightweight but featureful, and easytouse email client (mailer, mua).

sylpheed runs on many systems such as windows, linux, bsd, mac os x and other unixlike systems.

sylpheed uses gtk+ gui toolkit. the newest version of sylpheed works with gtk+ 2.4 or later (2.6 or later is recommended).

sylpheed is a free software distributed under the gnu gpl (the library part is gnu lgpl). you can freely use, modify and redistribute it under the license.

Links to official Sylpheed sites

Official Website
Twitter

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The Best 39 Sylpheed 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
269 Like

Mailbird

Mailbird is more than just another email client - It's an all-in-one communication platform for email, contacts, calendar, apps, task management, video meetings and much more. Try it free, today.

Freemium Windows

Sync Contacts GSuite Integration Multiple Account support Slack integration Dropbox integration Facebook integration Asana integration Conversation view Trello integration Twitter integration Undo send Unified inbox
146 Like

Evolution

Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list management functions.

Free Open Source Linux BSD S/MIME GNOME OpenPGP

Integrated Spam Protection Multiple languages Built in RSS reader Calendar integration POP3 Support Encrypted email CalDAV CardDAV
128 Like

Postbox

Postbox is an email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity of Apple Mail, but with more power and flexibility to manage even the most demanding workloads.

Commercial Mac OS X Windows

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
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
69 Like

Geary

Geary is an email application built for GNOME 3. It allows you to read and send email with a simple, modern interface.

Free Open Source Linux BSD GNOME
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
49 Like

Mutt

Mutt is a small but very powerful text-based mail client for Unix operating systems.

Free Open Source Mac OS X Windows Linux Xfce

Support for IMAP POP3 Support Command line interface S/MIME support
46 Like

The Bat

The Bat! is a secure email client software, built to protect your correspondence against third-parties. .

Commercial Windows S/MIME OpenPGP

Portable Support for IMAP Built in RSS reader POP3 Support
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
28 Like

Kontact - KMail

KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE.

Free Open Source Mac OS X Windows Linux BSD
24 Like

Kontact

Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are seamlessly integrated into one.

Free Open Source Windows Linux
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
21 Like

Email.biz

Indian Webmail service allowing people to sign up for an @email.biz mail account. Cloud based Login and Multiple Login System give you safe and secure access to your POP / IMAP email accounts.

Free Web
18 Like

Microsoft Mail and Calendar

windows 10 has mail and calendar apps already built in.

Free Windows Windows RT
5 Like

Mulberry

Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. Mulberry also helps you manage other related information, such as contact information.

Free Open Source Mac OS X Windows Linux

POP3 Support CalDAV
3 Like

mail2web.com

Check your email on the web using our Webmail Application. With mail2web.com you can check your email from anywhere using our Webmail service. No registration required and we never share your information with anyone.

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

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Sylpheed

Links to official Sylpheed sites

Features

Categories

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The Best 39 Sylpheed Alternatives

Thunderbird

Microsoft Office Outlook

Mailbird

Evolution

Postbox

Opera Mail

Claws Mail

Geary

Airmail

Mutt

The Bat

Newton Mail

Kontact - KMail

Kontact

Icedove

Email.biz

Microsoft Mail and Calendar

Mulberry

mail2web.com

ProfiMail

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