The Site Mailbox is going away in SharePoint Online

Courtesy Vlad Catrinecu

This morning, Microsoft published a message in the Office 365 Admin Center for administrators who have at least one Site Mailbox in their organization. Starting as soon as March 2017 (in only 1 month), you will no longer be able to create new Site Mailboxes, however any Site mailboxes will continue to work until September 2017. Instead of site mailboxes, you should now use Office 365 groups.

Starting September 2017, Microsoft will offer a process to move your content from Site Mailboxes to Office 365 Groups. Here is the full message:

We’re removing Site Mailboxes in SharePoint Online

MC92090

Published On: January 31, 2017

Expires On: September 15, 2017

Beginning March 2017, new SharePoint Online organizations will no longer have access to the Site Mailbox feature, existing SharePoint Online organizations will no longer be able to create new Site Mailboxes; however, any Site Mailboxes provisioned prior to March 2017 will continue to function.

How does this affect me?

You are receiving this message because our reporting indicates your organization has one or more Site Mailboxes available. Beginning March 2017, your users may no longer create new Site Mailboxes. In September 2017, we will have a process in place allowing you to transition your existing Site Mailbox site to an Office 365 Group. We will communicate again in June 2017, via Message Center, with more details.

What do I need to do to prepare for this change?

If you are using the Site Mailbox feature in SharePoint Online, you should consider transitioning to Office 365 Groups, to support email-centric collaborative scenarios. Please click Additional Information to learn more.

Additional information

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