Thunderbird is not being actively developed; it is in maintenance mode. You shou...

		e15ctr0n on Feb 28, 2015 \| parent \| context \| favorite \| on: Thunderbird Usage Continues to Grow Thunderbird is not being actively developed; it is in maintenance mode. You should try it out. https://www.mozilla.org/en-US/thunderbird/download You can customize its UI and functionality through thousands of community-contributed add-ons. https://addons.mozilla.org/en-US/thunderbird/

it is community developed.