Learn about securing and protecting email messages in Outlook
Learn how to use encryption and other security settings to protect messages sent from Outlook.
Send S/MIME or Microsoft Purview encrypted emails in Outlook
On the Email Security tab, under Encrypted email, select the Encrypt contents and attachments for outgoing messages check box. To change additional settings, such as choosing a specific certificate …
Set up Outlook to use S/MIME encryption - Microsoft Support
Instructions to set up Outlook for encryption and digital signatures To set up Outlook for encryption and digital signatures, choose instructions based on the version of Outlook you're using.
Send encrypted messages with a Microsoft 365 personal or family ...
If you have a Microsoft 365 Family or Microsoft 365 Personal subscription, Outlook includes encryption features that let you share your confidential and personal information while ensuring that your email …
How do I turn on S/MIME in Outlook Mobile - Microsoft Support
To turn S/MIME on: In Outlook, tap the Account control at the top left, then select the Settings button near the bottom left. Tap on the specific account you want to turn S/MIME on for. Tap Security and …
Secure messages with a digital ID in Outlook - Microsoft Support
Under Microsoft Outlook Trust Center, select Trust Center Settings. On the Email Security tab, under Encrypted Mail, select the Add digital signature to outgoing messages check box.
Send a digitally signed or encrypted message for Mac
In an email message, choose Options, select Encrypt and choose the encryption option that has the restrictions you'd like to enforce, such as Do Not Forward or Encrypt-Only.
Open encrypted and protected messages - Microsoft Support
Learn how to identify and open encrypted and protected emails no matter what email client you're using.
POP, IMAP, and SMTP settings for Outlook.com - Microsoft Support
If you're trying to add your Outlook.com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. You can find them below or by viewing them in your Outlook.com …
Apply sensitivity labels to email messages in Outlook
To apply IRM protection, S/MIME signature and encryption must be removed from the message. The same applies for IRM-protected messages; users can't sign or encrypt them by using S/MIME.