IanSheldon has code out there that integrates MailCrypt with the BBDB. Basically, it allows you to add an entry to your BBDB records to indicate if the recipient prefers PGP or GPG encrypted or signed mail. If so, when you send the mail, it will automatically be encrypted. This has been tested with Gnus.
That host is not resolvable, as of 31 August 2003 – does anyone have a working link, or the actual code?
you can get the file with archive.org’s waybackmachine, like this
last entry in archive.org is from march 2003. didn’t test the elisp yet. – AnselmHelbig