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FossaMail Alternatives

FossaMail Alternatives

FossaMail

FossaMail is an Open Source, Mozilla Thunderbird -based mail, news and chat client for Windows and Linux, brought to you by the Pale Moon developers.

FossaMail:

Is built from source with compiler optimizations geared towards an as stable and smooth operation of the client as possible (Pale Moon-alike optimizations).
Uses the Pale Moon browser core as its back-end. The client is therefore based on Pale Moon rather than other Mozilla-powered products.
Uses its own profile folder on your system. This means it will not interfere with existing Thunderbird installations.
The default profile location is %APPDATA%\FossaMail
Should be compatible with all Thunderbird (v24/25b era) add-ons and plugins.
Is available in 32-bit (x86) and 64-bit (x64) versions for both Windows and Linux.
Comes with an optional calendar/organizer add-on (Lightning, available from the download location below) that will allow it to be used in a Microsoft Office Outlook style information manager fashion.

Best FossaMail Alternatives for Windows

In our list of best programs, we'll review some different alternatives to FossaMail. Let's see if your platform is supported by any of them.

Thunderbird

Thunderbird

FreeOpen SourceMacWindowsLinuxBSDPortableApps.comHaiku

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

Features:

  • Extensible by Plugins/Extensions
  • Support for IMAP
  • Built-in RSS reader
  • Encryption
  • SMTP integration
  • Add-ons
  • Calendar integration
  • Extensions
  • Multiple Account support
  • Protected by Password
  • Tabs
  • Built-in Calendar
  • Categories
  • Customizable
  • Delivery reports
  • Extensible by Plugins/Extensions
  • Free API
  • Gmail integration
  • Google Calendar integration
  • Import from Google Reader
  • Gui
  • HTML Compose
  • Integrated Chat
  • Integrated Password Manager
  • Integrated Web Browser
  • Intuitive
  • Legacy addons support
  • Export to OPML
  • Import feeds from OPML
  • Organize mails
  • POP3 Support
  • Portable
  • Secure File Sharing
  • Support for POP3
  • Tabbed interface
  • Support for Themes
Mailbird

Mailbird

CommercialWindows

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...

Features:

  • Undo send
  • Asana integration
  • Clean design
  • Sync Contacts
  • Contacts
  • Dropbox integration
  • Facebook integration
  • GSuite Integration
  • Multiple Account support
  • News
  • Night mode/Dark Theme
  • Organize mails
  • Sidebar
  • Slack client
  • Slack integration
  • Social network
  • Threaded Conversations
  • Trello integration
  • Twitter
  • Twitter integration
  • Unified inbox
eM Client

eM Client

FreemiumMacWindows

eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts and chat.

Features:

  • Calendar integration
  • Automatic Backup
  • Built-in themes
  • Built-in translation
  • CalDAV
  • CardDAV
  • Chat
  • Cloud sync
  • Combined Inbox
  • Sync Contacts
  • Contacts
  • Encrypted Email
  • Email preview
  • Exchange
  • Apps that Sync with Google Calendar
  • Support for IMAP
  • Imports email from Live mail
  • Night mode/Dark Theme
  • POP3 Support
  • Ssl
  • Calendar Sync
  • Threaded Conversations
Postbox

Postbox

CommercialMacWindows

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...

Features:

  • Exchange
  • Multiple Account support
  • Box.com integration
  • Built-in RSS reader
  • Dropbox integration
  • Extensible by Plugins/Extensions
  • Support for IMAP
  • Multiple languages
  • Onedrive integration
  • POP3 Support
  • Tabbed interface
  • Visual Programming
Claws Mail

Claws Mail

FreeOpen SourceWindowsLinuxBSD

Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration...

Features:

  • Lightweight
  • Built-in RSS reader
  • Content Filtering
  • Customizable
  • Extensible by Plugins/Extensions
  • Support for IMAP
  • Integrated Email Client
  • Multiple languages
  • Multiple Account support
Zimbra Desktop

Zimbra Desktop

Free PersonalMacWindowsLinux

The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud...

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