How to setup Microsoft Graph for send mail with Office365

Less than one minute read time.

To use Microsoft Graph on Office 365, requires setup in Office 365 to allow Azure permissions for API.

  • Login to as Administrator
  • Open Admin Center

  • In Admin center Select Azure Active Directory

  • Select Azure Active Directory
  • App Registrations
    • Select New registration
    • Enter in Name for example Sage 300 Email

  • At this point the overview will show Application (Client) ID and Directory (tenant) ID.



  • The only remaining requirement is a Secret.
  • Select Add a certificate and secrets.
  • New client secret, Add a client secret.
  • Be sure to copy the Secret Value, this must be done when the page is first created. Values are then not viewable.


  • Select API Permissions
    • Add a permission
    • Select Microsoft Graph
  • Select Delegated permission for signed-in user
    • Scroll down list to Mail
    • Select Mail.Read
    • Add permissions
  • Select Add permission, Microsoft Graph, Application Permissions
  • Select Mail.Send
  • Select Grand Admin Consent to allow. 

With the above information, you are now able to fill out the Graph service requirements.  Application, Directory, and Secret Value.