ComodoSSLstore Loading
Lowest Price & Support

Comodo Personal Authentication Certificate

Enable email signing & encryption, document signing and two-factor authentication

Comodo Personal Authentication Certificates offer myriad benefits by allowing you to digitally sign your emails and documents, encrypt your emails and even add two-factor authentication to your login pages. CPACs typically come with a 2048-bit RSA signature key and are universally trusted by OSs, Servers, Mobile Devices and other platforms. Make sure your customers and partners can verify the authenticity and creator of any documents or emails you send with a Comodo Personal Authentication Certificate.


Max. Term
Validation Requirements
Certificate Fields
Email Encryption
Email Signing
Client Authentication
Document Signing
Price From

Basic Strict Mailbox
Validated S/MIME

2 Years
Email Verification
Icon Checkmark
Icon Checkmark
Icon Checkmark
Icon Checkmark
$46.52/year$19.88/year(Save 57%.)

Pro Multipurpose Mailbox
Validated S/MIME

2 Years
Email Validation
Icon Checkmark
Icon Checkmark
Icon Checkmark
Microsoft Office & OpenOffice Signing
$111.69/year$45.19/year(Save 60%.)

Enterprise Multipurpose Organization
Validated S/MIME

2 Years
Email ValidationOrganization Validation
[email protected]Organization Name
Icon Checkmark
Icon Checkmark
Icon Checkmark
Microsoft Office & OpenOffice Signing
$176.86/year$60.22/year(Save 66%.)

Digitally Signs Emails

Your CPAC applies your digital signature to every email you send. When your email reaches its intended recipient, the signature will help them verify the sender's identity and that the message hasn't been altered.

Encrypts Emails

Thanks to the end-to-end encryption enabled by the certificate, your emails are safe from being intercepted, read, or altered.

Digitally Signs Documents

Similar to how it works with emails, your Pro and Enterprise CPAC will add your digital signature to any document you sign. This lets anyone who reads the document verify the identity of who made it and confirm the document hasn’t been changed since signing. If you need to sign PDF documents, we recommend our Adobe Approved document signing certificate.

Adds Two-Factor Authentication

After a Pro or Enterprise Comodo Personal Authentication Certificate is installed on your computer, your login page will request it every time a user attempts to log in to their account. This all takes place behind the scenes so there are no disruptions.


Assurance & Authentication

Nothing is more important than trust when it comes to the world of online business. Without it, you're not going to sell, convert-whatever goal you're trying to accomplish. Comodo Personal Authentication Certificates help you to build that trust by ensuring the integrity of your email and documents and assuring your users about your identity. Don't give your customers and partners any reason not to trust you. Purchase a CPAC today and start applying your digital signature.


Installation & Technical Support

Submit a Support Ticket

Got a problem you can't resolve? Submit a support ticket and we will respond ASAP.


Frequently Asked Questions

Get quick answers to the most popular questions associated with SSL.


It's 6AM & your site is down.

How fast can you fix it?

Get rid of website stress with CodeGuard Backup – automatic backups and one-click restore mean you can fix website issues in minutes!

Get Codeguard Backup

They Trust Our Solutions:

Close uses cookies to remember and process the items in your shopping cart as well as to compile aggregate data about site traffic and interactions so that we can continue improving your experience on our site. Learn more about Cookies