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Why S/MIME?

The S/MIME (Secure/Multipurpose Internet Mail Extensions) technology secures your email correspondence through encryption and signing.

The asymmetrical encryption protects S/MIME emails against unwanted access, i.e. the reading and modification of the email content by third parties. The digital signature confirms the authorship of the email and notifies the recipient of any unauthorized changes, making it an effective means of detecting phishing emails.  

S/MIME certificates are cost-effective because an unlimited number of emails and documents can be sent preencrypted and signed within an email address. They are easy to integrate and use.

Mode of Operation

Digital certificates digitally bind a cryptographic key to a user's identity, providing proof of the origin and integrity of the transmitted message. Once the certificate is installed, the user can easily sign or encrypt selected emails with one click, or automatically sign and encrypt all emails with the digital certificate via the corresponding configuration.

S/MIME is supported by most mail clients (e.g. Microsoft Outlook, Thunderbird, Apple Mail, Lotus Notes and Mulberry Mail).

Overview of the available S/MIME Certificates

The S/MIME certificates are issued via a digital ID for persons and departments of a company.

GlobalSign

Certificate NameDigital ID for UseLevel of Trust
1=high, 3=highest
Digital ID proves Right of OwnershipAuthentication
Personal Sign 1For general use1Email addressBy email
Personal Sign 2Represents your own person2Email address
Identity assurance of the person
By email
Copy of the personal identification card
Personal Sign 2 ProFor a person who represents an entire company3

Email address
Identity assurance of the person
Assurance of the existence of the organization

Via a call to the personnel department with a number from the phone book
Company Register is checked
Personal Sign 2 DepartmentFor a department2Email address
Assurance of the existence of the organization
By email
Company Register is checked


DigiCert

Certificate NameDigital ID for UseLevel of Trust
1=high, 3=highest
Digital ID proves Right of OwnershipAuthentication
S/MIME Class 1
For general use1Email addressBy email
S/MIME Premium (Class 2)For a person who represents an entire company2

Email address
Identity assurance of the person
Assurance of the existence of the organization

Via a call to the personnel department with a number from the phone book
Company Register is checked
Digital Signature PlusFor general use1Email addressBy email


Sectigo

Certificate NameDigital ID for UseLevel of Trust
1=high, 3=highest
Digital ID proves Right of OwnershipAuthentication
Sectigo - Personal S/MIMEFor general use1Email addressBy email
Sectigo - Pro S/MIMEFor a person who represents an entire company2

Email address
Identity assurance of the person
Assurance of the existence of the organization

By email
Via a call to the personnel department with a number from the phone book
Company Register is checked
Sectigo - Enterprise S/MIMEFor a person who represents an entire company3Email address
Identity assurance of the person
Assurance of the existence of the organization
By email
Via a call to the personnel department with a number from the phone book
Company Register is checked


More detailed information on the individual certificates can be found in our knowledge base.