Secure Email S/MIME Hero
Secure Email Certificates (S/MIME)

Secure every email from
draft to delivery

Automate signing and encryption for your most-hacked
medium with quickly deployed client (S/MIME) email
certificates. That’s digital trust for the real world.

A more sophisticated attack

Attacks from cybercriminals are becoming more sophisticated all the time. Where fraudulent emails were once much easier to detect—even by the untrained eye—today's spoofing and phishing emails can be mistaken for legitimate communication, even by educated users.

A more trusted defense

PKI email encryption defends against phishing, spearhead phishing, spoofing and other forms of email fraud. Using S/MIME email signing certificates, PKI encrypts messages and attachments in transit and signs them, binding the verified identity of the sender to the email itself.

Put trust in your messages

Secure email certificates provide

  • Tamper prevention
  • Unaltered contents
  • Message privacy
  • Proof of authorship
  • Authentication of sender
DigiCertOne PKI Reimagined

Authentication, encryption and data integrity for email

For many organizations, the unsuspecting recipient of an email is the most worrisome attack vector. As with websites and bank transactions, email data needs to be protected while it’s moving from sender to recipient and at rest wherever it’s stored. Email certificates offer a proven PKI email encryption and authentication solution that not only secures the content of the email, but it also embeds the verified identity of the sender.

With DigiCert® Trust Lifecycle Manager, you can control and administer all your email signing certificates from one place. No matter how many people are in your organization, all your communications can be protected and validated with ease. Integrate corporate email services, authenticate users, remove former employee access and recover secure emails—all from one sign-on.


How email certificates work

Unsigned and unsecured email

Signed and encrypted email



Secure and validated? Check.

The five essentials of secure email

Secure Email Certificates

Central administration

Manage and deploy all your email certificates from a single console.

Secure Email Certificates

Centralized recovery

Choose from cloud-based, two-part recovery or on-premises key escrow.

Secure Email Certificates

Rapid deployment

Save time by using pre-configured email certificate profiles designed by experts.

Secure Email Certificates

Flexible enrollment

Select a method that fits your needs—self-support portal, OS/browser enrollment or Mobile Device Management (MDM/UEM) web services.

Secure Email Certificates

Seamless provisioning

Enjoy hands-off deployment. Automated options are available via PKI client with Gateway and Active Directory (AD) authentication, Passcode, or MDM/UEM service.

Meet business and legal compliance

Establish and maintain compliance standards with email signing certificates, including GDPR, PCI-DSS, FERPA, HIPAA, and other regulatory laws and policies around the world. Email certificates also help you reach internal security policies and best practices, protecting your employees, customers, partners and organization.

DigiCert Verified Mark Certificates

Verified Mark Certificates help protect your brand from domain impersonation attacks and deliver trusted email communications directly to inboxes—making your logo visible alongside every authenticated message.

Benefits of VMCs:

  • Protect your brand: Make it harder for bad actors to impersonate a domain
  • Reduce risk: Help recipients avoid malicious email content
  • Boost trust: People are more likely to engage with email senders they know.

Related Resources

Trust Lifecycle Manager resource 1

DigiCert Trust Lifecycle Manager 

Digital Trust: The Foundation for Digital Freedom Promo Image

Digital Trust: The Foundation for Digital Freedom


Secure Email with The DigiCert PKI Platform


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