Impressive!
Thunderbird is a case study on how to ask for Donations in FOSS.
https://blog.thunderbird.net/2023/05/thunderbird-is-thriving-our-2022-financial-report/
Impressive!
Seriously, this screen opens once the app is updated. It's really good. https://www.thunderbird.net/en-US/thunderbird/115.0/appeal/