User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.7.1) Gecko/20040707 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.7.1) Gecko/20040707 I would like to see the following feature: If I compose a mail, and for every recipient, I also have a public certificate in my store, MailNews should prompt me if I want to encrypt the mail. Why would this feature be useful? Because most of my communication partners (about 95%) do not have email certificates, so having the "encrypt" option always turned on is not very handy (an error message pops up everytime I have a recipient in my list for who I do not have a public cert). Reproducible: Always Steps to Reproduce:

bug 135636 does what you want, I think *** This bug has been marked as a duplicate of 135636 ***