Secure messages with a digital ID in Outlook - Microsoft Support
Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.
Send S/MIME or Microsoft Purview encrypted emails in Outlook
Because S/MIME receipt requests must include a digital signature, you must Set up Outlook to use encryption and digital signatures to request an S/MIME receipt.
Digital signatures and certificates - Microsoft Support
What is a digital signature? A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents.
Send a digitally signed or encrypted message for Mac
Learn how to use digital signatures and encryption in Outlook for Mac. Both the sender and recipient must have a mail application that supports the S/MIME standard.
Set up Outlook to use S/MIME encryption - Microsoft Support
If you want to insert a digital signature into an email, you need to install a digital ID (certificate), which is verified by a third party. Before you can send and receive messages with encryption …
Verify the digital signature on a signed email message
Digitally signed email messages can be verified for digital ID authenticity and validity.
Add or remove a digital signature for Microsoft 365 files
Learn about digital signatures, digital IDs, and signature lines to use in Word, Excel, and PowerPoint.
View digital signature and certificate details - Microsoft Support
You can view information about a digital signature, or the certificate that is used to create the digital signature, in Word, PowerPoint, and Excel. For more information on adding or removing …
Show trust by adding a digital signature - Microsoft Support
You can show that you believe a database is safe and that its content can be trusted by adding a digital signature to the database. A digital signature confirms that any macros, code modules, …