External user email notifications when sharing a site

Hi Kevin,

There are a few factors that may be contributing to the issue you are facing.

First, if you are sharing the team site with a new external user (i.e. they have never been shared with from your tenant before), SPO will send an external sharing invitaiton. These mails are not CC'd to the sharer (note: we are building this feature soon) which is why you did not receive a notification in your inbox.

Second, we recently made a change to send mails from Exchange Online Protection (no-reply@sharepointonline.com) instead of from our previous address ("Microsoft Online Services"). Please have the recipient check their junk mail folder and, if they have it enabled, their "Clutter" inbox.

If you continue to have issues, please let me know so we can investigate further. Thanks!

Stephen Rice

OneDrive Program Manager