checks security standard of e-mail recipients before sending

  • How would you know if your e-mail will be delivered via SSL? When composing your message with, just by typing the recipient address you will find out in an instant – before actually sending anything!
  • A simple symbol on screen will tell you what kind of transport security is supported by the e-mail provider of the recipient.
  • As a result, your private and business communication will become more secure and transparent.


blog-ssl-featureAll customers of can now easily see if the message they wish to send will be transmitted to recipients on an SSL-encrypted connection. uses a straightforward way to classify the e-mail providers at the receiving end of the communication. Basically, there are three symbols indicating the supported transport security level: 1) If the provider offers no encryption whatsoever, users will see a red, open padlock symbol next to the recipient’s address; 2) normal SSL encryption support will yield a green padlock symbol, and 3) if the system supports the highest SSL standard as well as DANE and DNSSEC security, users will be presented with a symbol showing a green sealed padlock.


„Even though surveillance scandals are in the news on an almost daily basis, only 85 percent of e-mail providers offer basic SSL encryption.“, says Peer Heinlein, founder and operator of „For this reason, users have no real certainty about the secure transmission of their e-mail messages around the world.“


Offering secure transmission to… everywhere

E-mail providers are not obliged to facilitate any secure communication to other providers. If there is no encryption, a malicious user could act as a „man in the middle“ and manipulate the SMTP connection process in order to force the unencrypted delivery of an e-mail message.


At, such attacks will be detected automatically and if an external mail server suddenly falls below its previously known security standard, we will stop the delivery of e-mails to this server until our administrative team has investigated the case and determined that message delivery to this server is safe again.


Through these measures, creates a new level of security for the sending of e-mails. The new service works with all mail servers on the Web, which stands in contrast to „E-Mail made in Germany“, where the secure transmission of messages is limited to a few selected providers. can now guarantuee the secure sending of e-mails to all providers which offer an secure encrypted connection.