You can find our app in the Microsoft Azure Marketplace:
https://azuremarketplace.microsoft.com/en-US/marketplace/apps/aad.documo?tab=overview
You can also find all of the documentation for set-up here:
https://docs.microsoft.com/en-us/azure/active-directory/saas-apps/documo-tutorial
Note: For Field Name in SAML token containing identity email, please note that you may use anything you'd like (i.e. emailaddress). It's important to use the variable on the left side, not user.mail, and that it matches precisely from Azure to Documo.