1. The Thunderbird Council (see footnote) and the Mozilla Foundation executive team maintain a good working relationship and make decisions in a timely manner.
2. The Thunderbird Council and the team make meaningful progress in short order on operational and technical independence from Mozilla Corporation.
3. Either side may give the other six months notice if they wish to discontinue the Mozilla Foundation's role as the legal and fiscal host of the Thunderbird project. In a conversation with Slashdot, a spokesperson of Mozilla acknowledged that the general sentiment is "Thunderbird code needs to be modernized and the dependencies on the Mozilla code framework need to be reduced. This may include re-implementing or migrating features to make better use of web technologies."
(Footnote: Back in 2012, Mozilla announced that it would reallocate most of the paid project members to other projects, handing off the responsibility for the project to the volunteer community that had formed around Thunderbird. This group met in Toronto in 2014 to discuss the future of Thunderbird and formed the Thunderbird Council, a group of individuals that has the power to make business decisions going forward.)