Thunderbird is a open source mail client developed and maintained by Mozilla foundation. Developed by Mozilla Corporation
License: Open Source
Feature | Thunderbird | Opera Mail |
---|---|---|
Built-in RSS reader | ||
Extensible by Plugins/Extensions | ||
Import from Google Reader | ||
Integrated Chat | ||
Integrated Web Browser | ||
Multiple Account support | ||
Support for OPML import of feeds | ||
Tabbed interface | ||
Integrated Email Client | ||
Integrated Spam Protection | ||
Mail filtering | ||
Message Filtering | ||
Portable | ||
Calendar integration | ||
Automatic Backup | ||
Built-in themes | ||
Built-in translation | ||
Support for IMAP | ||
Encryption | ||
Ad-free | ||
Configurable | ||
Encrypted chat | ||
Address book integration | ||
Built-in Calendar | ||
Exchange | ||
Unified inbox | ||
Customizable | ||
Email tracking | ||
CalDAV | ||
Clean design | ||
Sync across Devices | ||
Bundled with macOS | ||
CardDAV | ||
Encrypted Email | ||
Gantt-charts | ||
Kanban boards | ||
Work Item Tracking | ||
Agile boards | ||
Lightweight | ||
Content Filtering |