When WPO365 will try to authorize a specific account to submit email messages to Microsoft Graph, it will also request an ID token to verify the email address of that account.
Please note This step is optional and can be skipped if you will check the option to Skip all checks on the plugin’s Mail configuration page.
Perform the following steps to configure some of the fields (so-called claims) of that ID token.
- Click Token configuration from the App registration’s menu on the left.
- Click + Add optional claim.
- Select ID.
- From the list check the following options
- family_name
- given_name
- upn
- Click Add to save the optional claims.
If you are asked to add the email and profile permissions required for these fields to be sent in the ID Token, then confirm by clicking yes.