PersonalSign (S/MIME) Certificates

Secure your emails by applying a digital signature, encrypting the email, or a combination of both.

Digitally signing an email proves authorship and prevents tampering. It assures recipients that the email came from you and that its contents have not been altered in transit.

Encrypting emails ensures message privacy and keeps sensitive information from falling into the wrong hands. With S/MIME encryption, only the intended recipient can access email contents.

Without an email certificate, emails are not as private as you think

When you send an email through Outlook or Gmail, the information could be visible to people who know where to look:

Emails are bounced around through a series of servers and across the internet. As such, they’re not secure without having encryption or other protective mechanisms in place.

This means that they can be “read” by hackers. This puts sensitive data from both your company and your customers at risk.

A powerful weapon to combat email fraud

Malicious parties have become increasingly sophisticated at targeting organizations via email, including intercepting messages to view sensitive information and/or email spoofing with the intent of pushing users to phishing sites or triggering malware downloads.

By using email (S/MIME) certificates to digitally sign and/or encrypt emails, organizations are able to protect themselves from these threats:

With an email (S/MIME) certificate in place, only intended recipients can access email content. The certificate also verifies the email origin to help distinguish between legitimate and malicious emails.

End-to-End Encryption (E2EE)

Unlike virtually all other “secure email” solutions, email certificates offer end-to-end encryption.

Security professionals and privacy experts largely support the idea of end-to-end encryption because it better protects your data from hackers and other parties who may want to spy on you.

When you allow the data transmitter (the messaging service provider) to decrypt your messages, you’re leaving a significant potential security hole that could cause problems if the server is hacked or surveilled.

Secure your emails at any scale

Companies and organizations that require just a few certificates (less than 10) can place their order directly through our Customer Portal.

Companies and organizations that require more than 10 certificates will benefit from our Managed S/MIME and Certificate Manager solutions offering both significant volume discounts and automation capabilities that enable enterprises to simplify high-volume deployments.

Key benefits

Strongest level of security

Highest level of security available for email communication


Trusted by all major email clients

Verifies origin

Verification of the email origin to helps identify malicious emails

Digitally signed emails

Signing emails help counter spoofing and phishing attacks

End-to-end encryption (E2EE)

Protects emails in transit and at rest

Free choice between algorithms

SHA256RSA or RSASSA-PSS (Managed S/MIME and Certificate Manager users only)

Full compliance with GDPR

Complies with applicable legislation such as GDPR



PersonalSign Express

PersonalSign Business

PersonalSign Department

Recommended for

Personal email Corporate email Corporate email


Ownership of email address Ownership of email address plus identity assurance of individual plus assurance of Organization existence Ownership of email address plus assurance of Organization existence

Certificate validity option

1 or 3 years 1,2,3 years 1,2,3 years

Identity on certificate

Email address

Email address & named individual

Peter Nielsen

Named department


Management platform

✔️ ✔️ ✔️

Unlimited support

✔️ ✔️ ✔️

Issuance time

Within minutes Within minutes* Within minutes*

Zero Touch Deployment option

✔️** ✔️**


Contact us Contact us Contact us

*Requires a Managed S/MIME account
**Requires a Certificate Manager account

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