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Written by Brad

June 29, 2022

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SharePoint & OneDrive External Sharing One-Time Passcode mails will now come from

SharePoint: SharePoint Development Services: SharePoint Development

From Microsoft Corporation
Technical Bulletin: MC394980 · Published Jun 25, 2022 · Last updated Jun 27, 2022

Message Summary

Updated June 27, 2022: We have updated the content below to show as intended.

In order to improve delivery reliability of the one-time passcode e-mails that are sent as part of the external sharing flow in OneDrive and SharePoint, we will be updating the sending address for these mails from to No other e-mails sent from OneDrive or SharePoint are being changed at this time.

When this will happen:

This change will begin rolling out late July and we expect rollout to be finished by late September.

How this will affect your organization:

This change should result in improved delivery reliability for all customers, and their partners, who use external sharing in OneDrive and SharePoint today. 

What you need to do to prepare:

You may need to update your documentation or review your mailbox policies. Please ensure that the domain is in the allow list for your mailbox policies

Please note, if your organization is using Azure B2B Integration with SPO, this change will not impact your organization.


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