Why Thunderbird? Thunderbird is one of the world’s most trusted open-source email applications empowering more than 20 million people globally. At MZLA the team behind Thunderbird we build privacy-respecting communication and productivity tools that help people manage their digital lives while staying in control of their data. We are open source by design. Our products are developed transparently and in collaboration with a global community of contributors and that same spirit shapes how we work collaboratively inclusively and with a shared commitment to putting users first. We are a small but growing company of 60+ people distributed across seven countries. As Thunderbird evolves beyond a single desktop application we are expanding across desktop mobile paid services and new product experiences … Sign In to View