What Is The smime.p7s Email Attachment?

Monday, April 20, 2015
By Kevin

The smime.p7s email attachment is an S/MIME encryption certificate from the sender of the email message. Most standalone email programs allow you to save or associate the certificate with the contact card of the sender. Then, and this is the best part, using that certificate (and your own) you can send an encrypted email to the sender. Encrypted email can only be decrypted and viewed by the owner of the certificate.