GPGol changes email format

I am just starting to use GPG4Win and GPGol. I have it installed and it is working, per se.

The issue I am running in to is that my default email format is HTML and I have an HTML signature. When I digitally sign my emails, GPGol is converting it to Plain Text. Is there a way to stop this? I want HTML, so is this possible?

Thanks in advance!

Cary