When you attach digital signature to an email message it offers another level of security which provides guarantee to the recipient.
Your digital signature includes your certificate and public key, which is defined from your digital ID. And that particular digital ID identifies as your digital mark.
It also signals the receiver that the data hasn't been modified.
A digital signature is not the same as a signature which you include with an outgoing message.
Anyone can duplicate an electronic mail signature, which basically is a closing statement.
But a digitally signed email or message can be received only from the holder of the digital ID who used to sign it.
The digital ID provides confirmation of the sender's validity, thus helping to prevent the message.
