DigiCert Code Signing Certificates

DigiCert S/MIME Email Certificates

Email security for individuals and organizations of every size

Secure Email (S/MIME) Certificates

S-MIME Certificates

Pair your GeoTrust certificate with an S/MIME certificate from DigiCert to get end-to-end encryption that protects against tampering, phishing and man-in-the-middle attacks.

Every S/MIME-protected message you or your employees send or receive will travel securely from outbox to inbox, giving you confidence no one has manipulated the contents along the way.

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  • 24x5 Standard Support
  • Automated certificate request and delivery
  • DigiCert CertCentral certificate management platform
  • Supported by Gmail, Yahoo and all major email services
  • Compatible with email apps like Microsoft Outlook and Apple Mail

Secure Email (S/MIME) Certificates

S-MIME Certificates

Pair your GeoTrust certificate with an S/MIME certificate from DigiCert to get end-to-end encryption that protects against tampering, phishing and man-in-the-middle attacks.

Every S/MIME-protected message you or your employees send or receive will travel securely from outbox to inbox, giving you confidence no one has manipulated the contents along the way.

Read More >
  • 24x5 Standard Support
  • Automated certificate request and delivery
  • DigiCert CertCentral certificate management platform
  • Supported by Gmail, Yahoo and all major email services
  • Compatible with email apps like Microsoft Outlook and Apple Mail

Secure Email (S/MIME) Certificates

S-MIME Certificates

Pair your GeoTrust certificate with an S/MIME certificate from DigiCert to get end-to-end encryption that protects against tampering, phishing and man-in-the-middle attacks.

Every S/MIME-protected message you or your employees send or receive will travel securely from outbox to inbox, giving you confidence no one has manipulated the contents along the way.

Read More >
  • 24x5 Standard Support
  • Automated certificate request and delivery
  • DigiCert CertCentral certificate management platform
  • Supported by Gmail, Yahoo and all major email services
  • Compatible with email apps like Microsoft Outlook and Apple Mail
Secure Email (S/MIME) Certificates

Features

Flexible Solutions

The right combination of S/MIME signing and flexibility to meet security requirements, stay compliant and satisfy every email use case.

Secure Email for Individual

Ideal for individuals or small teams using Google or other shared email platforms.

Secure Email for Business

Employee subscriptions for individuals (i.e., jane.doe@example.com) or group subscriptions for shared or corporate email addresses (info@example.com), perfect for companies looking to guarantee the authenticity of users and their communications.

Specifications

  • IETF Compliant EKU
  • Meets CA/B Forum standards
  • Enables mailbox-validated, individual-validated, organization-validated and sponsor-validated signatures

Frequently Asked Questions


With S/MIME, you get a public and private key pair. Sent messages get signed by your secret private key, and the same key decrypts messages others send to you. Your shared public key encrypts messages so you’re the only one who can read them while allowing people receiving your messages to verify your signature to know the email came from you.


Attackers who spoof company emails as part of phishing schemes send malicious messages that trick users into thinking the email came from the company or even from a specific employee. When attackers succeed at scamming customers, the organization loses business and racks up expenses in fraud losses and support costs.


Encryption is required in many industries that frequently send sensitive data via email, including retail, insurance, healthcare, and the defense industrial base. One example is the Payment Card Industry Data Security Standard (PCI DSS), which requires that cardholder data be rendered unreadable anywhere it’s stored. Encryption is a highly effective way to satisfy this standard.


Before you order, we recommend generating a certificate signing request (CSR), an encoded file that offers a standardized way to share your public key with DigiCert, along with information identifying your company and domain name.


A DigiCert certificate subscription gives you the flexibility to quickly replace or reconfigure a variety of certificates and licensed products, annualize certificate-related fees to simplify budgeting, and streamline certificate lifecycle management to automate license renewals.

Tools

S/MIME Resources Thumb
TOOLS

S/MIME Validation Guidelines

S/MIME Resources Thumb 2
TOOLS

S/MIME Industry Requirements

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Securing email: Digital trust in communications

Use Cases

DigiCert S/MIME Certificates are the ideal solution for individuals and organizations seeking to improve email security and visibility, including:

  • Meeting stringent compliance and/or regulatory environments
  • Protecting company data and IP
  • Insulating users from phishing and spoofing attacks
  • Improving user trust
  • Securing sensitive data in transit
DigiCert Document Signing Certificates

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