I think it was a version problem.
I have now installed gpgOL (2.0.1) and gpg4win version 3
It's working.
Just that emails do not directly access "decrypt", but those that are sent from MAC arrive as an attachment, with ASC termination. I need to change the extension to PGP, decrypt, and generate a file without extension. Then I need to change the extension to EML and then I'll be fine.
Can you fix it?