Mozilla Thunderbird 12.0.1

Mozilla Thunderbird is a free, open source, cross-platform e-mail and news client developed by the Mozilla Foundation.
Thunderbird scales to the most sophisticated organizational needs while making it easy to find what you need.

Mozilla has bolstered Thunderbird’s acclaimed security and privacy measures to ensure that your communications and identity remain safe. It’s like having your own security guard online.

Thunderbird allows you to customize your email to suit your specific needs whether it’s how you search and find messages or listening to music right out of your inbox.

Thunderbird 3 is based on the Gecko 1.9.1.5 platform including some major re-architecting to provide improved performance, stability, web compatibility, and code simplification and sustainability.