PGP Universal Certificate Harvesting

Hi,

I'm new to PKI and PGP Universal and I've been asked if it supports files with the P7S extension (generated by Google - gmail I'm assuming).

As I understand things at the moment, P7S files are created when someone encrypts an email.  The P7S file contains a PKCS #7 certificate.

Will PGP Universal be able to harvest the key in a PS7 file (SMIME.ps7)?

Thank you.