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How can we improve the tenant admin features O365?

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Provide external user access to shared mailbox created inside the organization

There should be option to provide external user access to shared mailbox.
Currently only internal user with license have access to shared mailbox. But there should be option such that external users can be added as member of shared mailbox created inside the organization since shared mailbox have feasibility to co-ordinate with external domain.

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Shalini Bangera shared this idea  ·   ·  Flag idea as inappropriate…  ·  Admin →

29 comments

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  • Terry Zacharias commented  ·   ·  Flag as inappropriate

    Since Mailbox on SharePoint on-line has gone away we need a way for External users to access an O365 group shared mailbox that is tied to a SharePoint site. External users can access a SharePoint site but without access to the shared mailbox collaboration is limited.

  • Matt Strauser commented  ·   ·  Flag as inappropriate

    We were able to forward the shared email to an outside address. In this case it is a neutral 3rd party that provides financial accountability for our non-profit.

    In the shared mail box look at Email forwarding.

    We also went into Admin Centers/Exchange (at the bottom of my admin page list - scroll down and click the \/) and white listed the external address. Protection/Spam Filter/Default(double-click - I did not expect a double-click). Add the external email address with no space or punctuation.

    I did this using a MS support phone call-back.

  • Steve commented  ·   ·  Flag as inappropriate

    If you can't do this, please allow for internal mailbox to be forwarded to more than one external account... We are a volunteer organization and have a role with 3 volunteers (high-turnover). We don't want to create internal mailboxes for each of these people so either have external users added to shared mailbox OR allow emails to be forwarded to more than one external account. Thanks

  • Anonymous commented  ·   ·  Flag as inappropriate

    Would be useful to have in collab/operations situation with service providers. A license would be required for all users accessing the mailbox, so no danger for MSFT

  • Anonymous commented  ·   ·  Flag as inappropriate

    Throwing my vote in there as well. I was tasked with this, but it doesn't look like it'll be possible.

  • Anonymous commented  ·   ·  Flag as inappropriate

    Yes! Working on projects with multiple parties, this would be perfect to collaborate

  • Pete Hunt commented  ·   ·  Flag as inappropriate

    We need this - we're merging organisations (and it's going to take months) and being able to share with users in the other tenancy would make life less painful.

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