Email Security

A variety of malicious content arrives via the net: from harmless SPAM that blocks the mailbox up to ransomware that makes personal and company data unavailable by harmful encryption and followup blackmailing. SerNet offers technical systems to be integrated into firewalls for best possible state of the art protection.

SAVAPI Mail Gateway

SerNet integrates AVIRA's SAVAPI scan engine. All incoming and outgoing emails can be checked and are not delivered if malicious. Following customer's demands those suspicious mails are moved to quarantine or directly erased while users and admins are kept informed.

SPAM Filter

SPAM-Filter help avoiding full mailboxes. SerNet adds multiple levels of protection to reduce not-wanted email to a minimum: address checks and Greylisting, usage of blocklists, heuristic checks with SpamAssassin, individual blocking of attachment types and many more. This functions are enabled on a customer's proxy server. We strongly discourage our customers to buy outsourced Anti-SPAM services from remote providers for data protection reasons.


Emails are not encrypted by default. Users have to obtain certificates for encryption first. SerNet supports both S/MIME and PGP. S/MIME is supported directly by Microsoft Outlook, Thunderbird, Apple Mail and also on iPhone and iPad without additional software.

Sales Contact

We will gladly send you further information about our products and services!

Just give us a call or send an email to

Christian Börker, Nadine Dreymann, Willem Rothe and Andrea Schell.

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