See how to view the details for signatures and certificates.

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

Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the web for work or school accounts to increase the security of messages. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text. Only the recipient who has the private key that matches the public ...

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.

Add your Google account On the Google account security page, go to the Add more second steps to verify it's you section, choose the Set up from the Authenticator app section. On the Get codes from Authenticator page, select either Android or iPhone based on your phone type, and then select Next.

Microsoft prioritizes account security and works to prevent people from signing in without your permission. When we notice a sign-in attempt from a new location or device, we help protect the account by sending you an email message and an SMS alert. If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with ...

Get answers to some basic questions about what two-step verification is, and how to set it up and use it to help keep your Microsoft account more secure.

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.