I think what this comes down to is that I don't want to screw over the users of my extensions by letting them die with TB60, but at the same time, I don't want to spend the time or energy dealing with porting them to the new world of WebExtensions. So, here's the deal: I've netted (after PayPal fees) at least $1,000 in donations for my extensions in each of the past seven years: (Note that there was one ridiculously large $485 donation in 2018 for reasons I will never understand, so it's an outlier and you should assume that the level of donations from 2017 is much more likely to be typical moving forward than the level from 2018.) Of course, I am grateful for the donations and appreciate the extra cash in my pocket, but right now, I care far more about my time than about the money. Therefore, if there is someone out there who is willing to do the work to migrate my extensions to WebExtensions, I will in exchange give you 100% of the net donations in the year after each extension is fully migrated -- either we can change the donation link to point to whatever donation platform you want to use, or we can leave it as-is and I'll pass on whatever donations I get to you every month or something -- and then at least 50% of the net donations for the next five years after that. I say "at least" because if/when I decide I'd rather just stop maintaining the extensions completely -- during that six years or at any point afterward -- I'll turn over the reins to you (if you want them) and you'll get 100% of the net donations from that point forward. This offer applies to Enhanced Priority Display <https://addons.thunderbird.net/thunderbird/addon/enhanced-priority-display/>, Folder Pane View Switcher <https://addons.thunderbird.net/thunderbird/addon/folder-pane-view-switcher/>, IMAP Received Date <https://addons.thunderbird.net/thunderbird/addon/imap-received-date/>,  Remote Content By Folder <https://addons.thunderbird.net/thunderbird/addon/remote-content-by-folder/>, Reply to Multiple Messages <https://addons.thunderbird.net/thunderbird/addon/reply-to-multiple-messages/>, Send Later <https://addons.thunderbird.net/thunderbird/addon/send-later-3/>, Show All Body Parts <https://addons.thunderbird.net/thunderbird/addon/show-all-body-parts/>, ToggleReplied <https://addons.thunderbird.net/thunderbird/addon/togglereplied-2/>, and Undigestify <https://addons.thunderbird.net/thunderbird/addon/undigestify/>. This offer doesn't apply to Keyconfig <https://addons.thunderbird.net/thunderbird/addon/dorando-keyconfig/>, because I didn't write it and it has another maintainer besides me and all I've really done with it is minor changes to keep it working up to TB60, so I don't think I've any right to commit to sharing donations for it. If you're interested in migrating Keyconfig, then I will talk to the other maintainer and see if he's willing to add a donation link and let donations go to you in exchange. Note that there is potentially a much larger market for Keyconfig because it used to work in both Firefox and Thunderbird so if you can implement a WebExtension version that works in both you'll probably make a lot of people very happy. If you don't want to migrate all of my extensions to WebExtensions, then I will gladly extend a subset of this offer to whichever extension(s) you want to migrate. Send Later is by far the most popular, with 72,081 "active users" according to the extensions management page, so it's the most important one to migrate and the one that gets the most donations. It's also got by far the most code, nearly 8,000 lines even ignoring all the locale files. After that, in decreasing order by popularity: Folder Pane View Switcher (8,449 users), Show All Body Parts (7,723), IMAP Received Date (2,483), Enhanced Priority Display (1,159), Reply to Multiple Messages (599), ToggleReplied (280), Undigestify (94), and Remote Content By Folder (70). (Keyconfig has 5,156 active TB users.) Feel free to forward this message to anyone you think might be interested. Alternatively, if you know of somewhere else I could make this offer where you think it might get more traction than on this list, please let me know. Thanks, Jonathan Kamens