As there doesn't appear to be a formal feedback channel or a way to reach the leadership in Mozilla Thunderbird, I thought I leave this note here and wish Mozilla the best. Whether or not they read this, I can never tell as this is all "community" driven. I used to donate to the Thunderbird development because I saw the email client had a lot of potential. Thunderbird turned out to become my main email client on Windows and each year, I would help its cause with a financial contribution. As of two years ago, I stopped all donations to its development effort and have migrated away from using Thunderbird. Each year, I see a few emails in my inbox asking me to help fund its development and each year, I just send it to the trash can. Today, I saw another email asking for donations and have unsubscribed. If the Mozilla Thunderbird team wants to treat its customers/donors properly, I would suggest the following. # Put together a properly managed support team who has the development team's full support - while the community is great, it often isn't equipped to resolve every issue. It also depends heavily on volunteers who may come and go and have various levels of capacity to address issues. This is not the way to support a project like Thunderbird. # Put together a way for us to send you feedback so that you know how you're doing. The money going into your pockets is important but metrics with how happy your users/donors are is equally as important. Addressing concerns should be a priority, especially to users who have made a financial contribution to your efforts. I would have thought getting feedback before we stop donating to your cause is important? Wishing you all the best.