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How to Send Encrypted Emails

Learn how to send encrypted emails from UC San Diego.

On March 1, 2016, CRES will be enabled for all Health Sciences customers. If you are not a Health Sciences customer and are interested in using CRES, fill out and submit this form:

Encrypt your email

  1. Compose the message as usual in your email client. Attach any documents to the message that should be included.
  2. Include the phrase, secure: anywhere in the subject line of an email.


Subject: secure: Very sensitive information

Note: Each message in a conversation you wish to encrypt must include the key phrase in the subject line.

Inform your recipient

There is a process to receiving an encrypted message. To the first time recipient, this may look suspicious and could be ignored. Before you send an encrypted message, notify your recipient of the coming message and send them these instructions.