e-mail security

Secure email exchange

KOSTAL would like to ensure a simple and secure e-mail exchange with all business partners.

KOSTAL offers three different encryption methods. We recommend that you select the international standard "TLS" for the transport encryption of e-mails.

We would like to make the secure e-mail exchange with us as easy as possible for you. Please have your IT experts fill out the online form.

If you have any questions, please do not hesitate to contact us at: mailsecurity@kostal.com

Thank you very much for your cooperation in encrypted e-mail exchange.
Business Partner Contact Information
Encryption type
Mandatory TLS from Leopold Kostal GmbH und Co. KG to Business Partner

To configure mandatory TLS for mails send from Leopold Kostal GmbH & Co. KG to the business partner, we require some information like used domains and TLS configuration on business partner's side.

please provide this information by filling out all fields here:

Request for TLS E-Mail encryption

All Leopold Kostal GmbH & Co. KG E-Mail inbound gateways accept TLS connections by default (opportunistic TLS).

To enforce that all mails to Leopold Kostal GmbH & Co. KG are sent encrypted, the business partner has to configure its own E-Mail gateway to enforce TLS over SMTP when sending mails for at least the domains listed below:

• kostal.com
• external.kostal.com
• soma.de
• Soma-gmbh.de
• external.soma.de

Request for PGP encryption