This Add-on is awesome. I just had to mail a bunch of screenshots and wondered why being able to paste from clipboard wasn't a thing. This Add-on comes to the rescue! :)
The missing star is in no way meant to say this isn't brilliant, but I'd love one more thing: Please make it ask for a file name excluding the suffix. Could have the current default name set in there so that just an enter would take it, minimizing flow disturbance.