How to modify the status or delete the post

Postie doesn’t provide update/edit/delete capabilities.

This is a challenging requirement as there needs to be a way to uniquely identify the post to change.

OK, thank you very much. I’ll find another way to solve this problem

You might be able to create a solution for your specific situation by creating a custom addon. See https://postieplugin.com/extending/

Thank you, I will try to use this method to solve