Hope you find the time for it :), I dun really know the format
I tried using this file to create a custom send via mailspring option but it seems to only work if there’s no existing window of mailspring open
That is a great hint. It seems that forwarding the command to the already running mailspring instance somehow fails, which creates an issue with it not working on Gnome anymore. That is definitely more complicated. But I’ll give it a try.
@Penguin98kStudio For the KDE issue, I need to know how KDE is handling the internal Send To functionality. I could provide a Mailspring package as a .deb or .rpm that contains some debug output. If you are willing to, I would create such package and provide it to you. Then you will need to start Mailspring from the command line and send me the log output from the terminal after using the Send To functionality. What do you think?