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 can get a head start on creating a branded signature by starting with an email signature template. From the template you can copy the signature you like into your email message and personalize it to make your own.

You can modify your email signature or create a new one to include links to your Facebook or X (formerly Twitter) profiles. To get started, make sure you save copies of the Facebook and X (formerly Twitter) icons to your computer.

The Signature Details dialog box displays certificate information such as the signer’s name in the Signing as box, and who issued the certificate. Open the file that contains the certificate you want to view.

Open the digitally signed message. Look at the Signed By status line to check the email address of the person who signed the message. It isn't enough to check the email address in the From line—you want to verify who actually signed the message, not only who sent the message.

Open the digitally signed message. Look at the Signed By status line to check the email address of the person who signed the message. It isn't enough to check the email address in the From line—you want to verify who actually signed the message, not only who sent the message.

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

All you have to do is get the template, copy the signature you like into your email message and personalize it to make your own Outlook signature. Check out the video to see how it's done.

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.

If you plan to exchange digitally-signed documents together with other people, and you want the recipients of your documents to be able to verify the authenticity of your digital signature, you can obtain a digital certificate from a reputable third-party certificate authority (CA).