Frequently Asked Questions

What is Secure Messaging?                            

Secure Messaging is the process of:                           

  • Identifying outbound email messages that need to be encrypted by using policies defined by the company.
  • Encrypting the email messages.
  • Sending encrypted messages using ZixCorp's Best Method of Delivery™.

What is Best Method of Delivery?                              

Best Method of Delivery (BMOD) allows encrypted email to be delivered in the manner that works best for the recipient.  It supports delivering encrypted emails to software clients or gateways using a variety of encryption standards such as S/MIME and TLS.  Additionally, BMOD provides methods of delivering encrypted emails to users who do not have encryption capabilities, including a secure Pull model.

What Internet browsers are recommended?  

Most Internet browsers will work, including Microsoft® Internet Explorer®, Mozilla® Firefox®, Google Chrome® and Apple® Safari™.

What mobile devices can be used?

Most major mobile devices can be used, including Apple® iPhone® and iPad®, BlackBerry® devices and Android® devices.

How long does a customer have to read the message I sent to them?

Messages you send to a customer expire 21 days from when you send them the message.

Can a customer send an encrypted email back to me?

Yes. After a customer views their email, they can select Reply or Reply All to send an encrypted email back to you. Customers can also use the Compose page to initiate a secure email to you.

Where can I get more information?

For more information on any of the products described, visit the ZixCorp website at