Migration path from site mailbox to Office 365 group (conversation)

[rob_nicholson_helios]

Is there a migration path yet from the legacy site mailboxes (which you used to be add as an app to a SharePoint site) to Office 365 groups?

It's a tricky one to Google as you get results about shared mailbox migration and I think site mailboxes are different.

[#2]

Nope, Microsoft just pulled the plug on those, the only option you have is to manually move the content.

[#3]

What like forwarding them one by one???? There are thousands of emails in one particular site mailbox. One can export a site mailbox to PST - any way to import that into an Office 365 group?

And once again, flabbergasted at this lack of migration tools. Not like Office 365 groups haven't been around for a few years now.