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San Luis Obispo County, California

 > County of San Luis Obispo > Business > Secure Email Help Page

Secure Email Help Page

About Secure Email and Instructions for Encrypting and Decrypting Messages

The County of San Luis Obispo uses encryption technology to safeguard sensitive and confidential information. If you receive an encrypted email, please be aware of the following:

  • When the county sends an encrypted message to you, you will receive an email notification with instructions 
  • The encrypted email can only be accessed and processed via your browser
  • If you are expecting an email notification but have not received it, check your spam folder
  • You will need to register the first time you access the encryption system
  • Replies will not be stored in the system, so be sure to save responses 
  • Encrypted emails will be removed from the system after a specific period of time
  • Be sure to mark as safe (whitelist) any message with 'CRES' as the sender or with '[Encrypted]:'  in the subject line 

To register with the secure email system

To read a secure email

To recover your password

Secure Email FAQ's



About the Encryption System - Cisco Registered Envelope Services

The County of San Luis Obispo uses Registered Envelope Services (RES) encryption technology from Cisco Systems to ensure that sensitive information is protected and can only be read by intended recipients. For selected County users, RES enables users to receive, reply to, and initiate secure email without the need to download or install any software. RES provides for receipt of secure email using a one-time registration and without the need to download or install any software.


Technical Support
If you encounter any problems, refer to the help links on this page first.  If you are unable to resolve the problem, contact the sender of the message.  You may also contact Cisco Systems via