It will take me a while to recover from the small seizure I had from trying to read the name of the file 
Sounds like a good idea, and it’s not without precedent. Even Cute PDF requires that the user also download and install Ghost Script, for example.
If you could somehow make it optional, that would prevent all sorts of support issues. (If WTF-whatever is installed locally, activate the Print to PDF button, and also rely on it for Email generation. If WTF-whatever is not installed locally, suppress the `Print to PDF button, and use the 3rd-party cloud service for Email generation.)