I am trying to make a software that can automatically open search boxes in Thunderbird.
For example, I have a list of customer email-adresses in an external software. The software should be able to call Thunderbird and search for emails of every client on that list.
Basically, I don't know where to start, and if that's possible. I know I could build a plugin for Thunderbird, but I need to call the searches from an external software.