[stunnel-users] IMAP TLS support in stunnel 4?

Hi All, I'd like to put stunnel in front of dbmail-imap and dbmail-pop, since they don't offer any encryption. I understand I can just do straight ssl connections, but would like [prefer] to support TLS. I've found patches to the stunnel 3 series that implement TLS for IMAP, but haven't found any for version 4. Has someone implemented it for 4? Is there a technical or political reason/problem, or just not enough round-tuits? Thanks, g.