How to setup Microsoft Graph for send mail with Office365

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.