is a popular and free email application from Mozilla, the people behind Firefox
. Like Firefox, one of the reasons for Thunderbird’s popularity is the number of quality add-ons that are available for download. While Thunderbird includes all of the necessary features for managing your email, there are tons of add-ons that bring additional functionality that may make the application far more useful and productive for you.
In this post we’ll highlight 20 add-ons that can prove to be highly useful.
Lightning adds a calendar to Thunderbird so you can keep track of your schedule from within Thunderbird.
Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.