I just like this module, and I think that since it has existed for a long time, it needs to fix all the flaws.
A couple of times the question was raised about the fact that if you write a message from the user’s page, a separate correspondence is created each time. Will this be fixed?
If you attach an image or anything else to the attachments and send, and then delete the message from both participants, then the attachments are not deleted from the repository. Perhaps the message itself remains there.
I do all the tests on the latest version.