Email encryption is used to encode the content of email messages to protect potentially sensitive information from being read by anyone other than the intended recipients. Encryption makes the content of your emails unreadable as they travel to the recipient.
You can encrypt messages by using the encrypt button on the toolbar or by typing one of the following keywords at the beginning of the subject line followed by a colon:
- PCI:
- PHI:
- confidential:
- secure:
- encrypt:
Encrypt an email using the Encrypt button in Outlook on the web
- Sign in to Outlook on the web.
- Create your email message as usual.
- Click the Options tab and then click the Encrypt button.
- Choose Encrypt or any of the other permission options.
- Send the message.
You can also encrypt email in the desktop apps. See the Sending encrypted email in Outlook knowledge base article for instructions on how to encrypt emails on the desktop apps.
