We use the SharePoint Online
plan and allow end-users who are outside our company to have access into the SharePoint website.
However, when we create their accounts, it automatically makes their domain @ourdomain.microsoft.com.
But when the user tries to set an alert, they get the message:
You do not have an e-mail address.
Alert has been created successfully but you will not receive notifications until valid e-mail or mobile address has been provided in your profile.
Troubleshoot issues with Microsoft SharePoint Foundation.
But I tried adding the user's own e-mail address into their profile's "Work E-mail" but they still can't get an alert. Even if I login and leave a Note on their profile, they won't get an e-mail alert regarding it.
Are E-mail alerts just not possible if you only have the SharePoint online plan?