Digitally sign and encrypt to authenticate and secure emails.

Comodo's free email certificates take seconds to install.

Customer Rating
5 Star Rating5 Star Rating5 Star Rating5 Star RatingStar Rating
4.9 / 5 423 Reviews

An S/MIME email certificate ensures your mail cannot be read by anyone but the intended recipients. It also ensure your message was not modified during transmission and allows recipients to confirm your identity as the sender of the message.

Please use Mozilla® Firefox® or Microsoft® Internet Explorer® 8+ to collect your certificate.

Email Certificates cannot be collected using Google® Chrome® or Microsoft Edge.

Why do I need a Secure Email Certificate?

  • Authentication - Email passes through many different computer systems without your knowledge. Not only are you unaware of the mail flowing through these public systems, you may also not know where these computers are located, or even who owns and maintains them. A secure email certificate lets you add a digital ID to your email to prove that the message and attachments originally came from you.
  • Privacy - Any non-encrypted email you send can be very easily intercepted and read. Someone may be able to snoop on your email inbox, or grab the messages as you wirelessly check your mail on a laptop. Comodo's email certificates protect your mail from prying eyes by providing end-to-end encryption between you and your contact. You encrypt the message on your computer and it can only be decrypted by the intended recipient when it arrives at their computer. Nobody can read it en-route.
  • Integrity - Regular, unsecured email can easily be intercepted and modified. Messages can be changed so that information is removed or even added without your consent. Adding a digital signature to an email with a Digital Certificate means that it is impossible for anyone to alter the contents of your mail without your recipient being alerted.

Why Comodo for your Email Certificate?

  • Complimentary - Comodo believes that private and secure messaging is a right not a luxury you should pay for. Comodo provides email certificates and SSL certificate free to personal users.
  • Fast and Easy to Obtain - You can get a Secure Certificate from Comodo within minutes using our online form. Just fill out your name, email address, choose a password and we'll deliver your certificate.
  • Compatible with your favorite mail program and device - Because they are issued by the one of the worlds most established SSL providers and use the x.509 certificate standard, Comodo's digital certificates are fully trusted by 99.9 percent of email clients and devices:

      Email Clients

    • Microsoft Outlook®
    • Microsoft Outlook for Mac®
    • Apple® Mail
    • Mozilla Thunderbird®
    • Or any other S/MIME compliant software

      Mobile Devices

    • iPhone / iPad
    • Android devices
    • Blackberry devices
    • Nokia phones
    • Windows phones and tablets

How Secure Email Certificates Protect Your Privacy

Comodo Secure E-Mail Certificates allow you to digitally sign your email as well as encrypt your email messages so that they cannot be read or edited during transmission.

Today, email is ubiquitous. Believe it or not, more than 2 million emails on average are sent every second. Yet without taking steps to secure your e-mail, it is about as secure as a postcard written in pencil. Whoever intercepts it can read it or change it with ease.

We use email every day to let friends, family members, and coworkers know our most private information, information we would NOT want prying eyes to see. Protect yourself today.

Comodo Email Certificate
User Reviews
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating 370 users   Newest Date  
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating Star Rating 53 users   Oldest Date  
5 Star Rating 5 Star Rating 5 Star Rating Star Rating Star Rating 0 users        
5 Star Rating 5 Star Rating Star Rating Star Rating Star Rating 0 users   Most Favourable Review  
5 Star Rating Star Rating Star Rating Star Rating Star Rating 0 users   Most Critical Review  
  • cancel buttonAdd user reviews
Michell
03/14/2016
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating
Smart Investment

I am a app developer, I have a blog site where I give free apps for downloads. Good that Comodo Code signing certificate is proving my free apps are genuine. Good that I invested on this.

Tom Enke
03/14/2016
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating
Testimony

As a part of my project our team had to deploy a software as per the requirements. We implemented code signing certificate to secure the software. I am sure it is a testimony of protection

Tom
03/13/2016
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating Star Rating
Smooth sales guidance

I was walked through the certificate acquisition process so smoothly, that I would have bought a shoe with no sole if sold.

Daren
03/13/2016
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating Star Rating
Highly reliable

With Comodo Code Signing Certificates you can rely on complete protection. A complete good package including the services they offer.

Morrow
03/12/2016
5 Star Rating 5 Star Rating 5 Star Rating 5 Star Rating Star Rating
Protection for Developed Code

Tamper protection for our painstakingly developed code.