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Secure e-mail communication at TÜV Rheinland

Today, e-mail is an important means of communication in all companies.

The contents of e-mails are often confidential and must therefore be protected from manipulation and unauthorized access.

Without such protection, e-mails can be read on their way through the Internet like postcards.

To achieve this protection, TÜV Rheinland uses secure standard procedures to exchange encrypted e-mails.

TÜV Rheinland provides a portal ( ) through which you can download public keys and certificates from TÜV Rheinland employees and provide your own key material. Alternatively, you can send your certificate with a digitally signed e-mail to securemail[at] You can also send other e-mail encryption requests to this address.

You can also request certificates and PGP keys from our key server via LDAP.
FQDN LDAP server:
Search base: o=Certstore (X509 certificates) | o=PGP Keys (PGP-Keys)

TLS (Transport Layer Security) is also used as an alternative.

This encrypts not the e-mails themselves, but the transmission path between the e-mail gateways of companies and authorities.

If you want to exchange encrypted e-mails with TÜV Rheinland, send an e-mail with a corresponding request to securemail[at] .

If you have fundamental questions about e-mail encryption or the procedures used in your company, please contact the appropriate technical contact person in your company.

TÜV Rheinland root certificates / TLS form