##Introduction To consider the problem of signing and email-encryption using pgp/smime we must consider a few things first:
- What is the main purpose to sign/encrypt the email messages on a list?
- How are we going to implement this feature? Which kind of digital signature, which standards, which kind of encryption will be used for this purpose?
- What possibly could go wrong with the system? What problems may arise as a result of this feature for the list managers/users?
I will try to answer these questions in best possible way in my proposal.
##Need for such feature?