S/MIME OV Certificate

Digicert S/MIME OV Certificate is easy and affordable solution used to secure business communications. This certificate allows you to encrypt and digitally sign email communications, offers two-factor authentication of users and employees, secures important company documents sent across the network, and will authenticate to ensure they have clearance to access online servers. S/MIME OV Certificate is fully trusted by all major email clients and internet browsers and rolling them out to employees or customers is a breeze.

This product can be used for email encryption, Email Signing, Document Signing (office) and client authentication.
NB : It doesn't support Adobe Document Signing.