Mozilla Thunderbird is a cross-platform email client that also includes a news reader and a chat module. It is able to manage multiple email accounts with advanced message filtering.
The installation process is easy-to-follow, it only requires you to press a few ‘Next’ buttons, after which you can get started on managing your email identities.
Thunderbird sports a modern, yet user-friendly interface that concentrates all of the software’s functions in a few menus. Popular features such as writing a new email, chatting or search are made available from a quick access toolbar.
Managing email accounts with Thunderbird is really easy. You can open emails in new tabs, you can use labels to mark important messages and you can read news without ever leaving its interface.
In terms of security, Thunderbird is no less disappointing. The Junk email filters blocks dangerous content, while the anti-phishing feature prevents your passwords and data from being stolen. Thunderbird’s security engine also includes digital signatures, certificates and encryption.
The chat feature allows you to communicate with your friends in an easy and comfortable manner (it supports XMPP, IRC and Twitter). You can add new contacts, join a chat room and customize your status.
The last, but not the least of Thunderbird’s many advantages is that it’s highly customizable. New features can be added via extensions, just like in Firefox’s case. The overall look and feel can also be changed by using themes or skins.
In conclusion, Thunderbird gets a thumbs-up from us. It allows you to manage multiple email identities, it can be used to chat and to read news and it can be adjusted to your needs with the help of addons.

What's New in This Release:
· NEW: Message threads can now be ignored or watched
· NEW: Emails can now be sent to IDN based email addresses
· NEW: Zoom functionality is now available in the compose window
· CHANGED: In the Compose window, ctrl/cmd + and ctrl/cmd - now change the zoom setting rather than the font size
· CHANGED: In Twitter, replying to a tweet now replies to all users, just like on the Twitter website
· FIXED: Interactions in the filter list dialogs have been improved
· FIXED: In Chat user nicknames are now highlighted when mentioned
· FIXED: In IRC, long messages will now be sent in multiple parts instead of being cut off
Various security fixes:
· MFSA 2013-92 GC hazard with default compartments and frame chain restoration
· MFSA 2013-91 User-defined properties on DOM proxies get the wrong "this" object
· MFSA 2013-90 Memory corruption involving scrolling
· MFSA 2013-89 Buffer overflow with multi-column, lists, and floats
· MFSA 2013-88 compartment mismatch re-attaching XBL-backed nodes
· MFSA 2013-85 Uninitialized data i...

Users are advised to pay attention while installing this ad-supported application:
· Displays ad banners or other types of advertising material during its runtime