Hi Steve -
I believe the answer to your question is "no," based on what I have read. However, I am not an expert in this technology, so be guided accordingly.
I have a question for you, as it seems you have managed to use Stunnel with gmail and I'm so far unable to get it to work. I set up an app-specific password with gmail for Stunnel, but I still can't get it to work. All I'm trying to do is send emails from a legacy device that cannot itself work with SSL/TLS. This is my config file - do you see anything wrong with it? If you managed to get stunnel working with gmail, would you mind sharing what your config file looks like?
;GLOBAL OPTIONS output = stunnel-log.txt debug = 7 Taskbar = yes
[gmail-pop3] client = yes accept = 110 connect = pop.gmail.com:995 cert = stunnel.pem
[gmail-imap] client = yes accept = 143 connect = imap.gmail.com:993 verifyChain = yes cert = stunnel.pem
[gmail-smtp] client = yes accept = 25 connect = smtp.gmail.com:465 verifyChain = yes cert = stunnel.pem
Thanks, Steve.
Larry