A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents. A signature confirms that the information originated from the signer and has not been altered.

You'll only see those certificates that you've added to the keychain for your Mac OSX user account and those certificates that are valid for digital signing or encryption.

A digital signature isn't the same as a signature you routinely include with an outgoing message. Anyone can copy an email signature, which essentially is a customizable closing salutation.

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This article contains information about how to troubleshoot problems that affect the ability to sign in to Microsoft Office apps for Mac, iPad, iPhone, or iPod Touch.

Automatically choose the best certificate for digital signing: Allows Outlook to select a base certificate. If not checked, you'll be prompted to select the right certificate.

To create an e-sign request, you’ll need to sign into your account with an available e-signature provider such as Adobe Sign or DocuSign. If you don't have account, it's easy to start a free trial or create an account.

Deployment content for Microsoft 365 Enterprise is on docs.microsoft.com - please see the resources below to get started. Was this information helpful? Find IT Pro resources for working with Office 365 enterprise.

Training: Create custom signatures that can be automatically added to your email messages in Outlook for Mac. Email signatures can include text, images, your electronic business card, a logo, or even your handwritten signature. Watch this video to learn how.

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