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 ...

Once you've downloaded the app from the Apple App Store, sign in with your work or school account to access content from your device. For help signing in see SharePoint app Sign In Help.

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

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

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

You can get expert help with Outlook for iOS or Android from right inside the app! Easily communicate with our support team using the in-app support functionality in Outlook.

From the Approvals hub Select Apps in Teams. Search for and select Approvals. Select Open. If you’re in the new view of a new request, select New approval request > Adobe Sign. If you’re in the classic view, select E-sign > Adobe Sign. From a chat or channel Select Chat or Teams in Teams.

Learn how the Microsoft 365 Copilot app for Android or for iOS works with Microsoft 365 subscription.

Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

Learn how to add an app, bot, tab, connector, or messaging extension to Microsoft Teams.