How do I migrate large mail items to Office 365?



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    Jason Wagner

    You can change the default for an organization by adjusting the default message size restriction. In the Exchange admin center Simply select recipients mailboxes then click “. . .” and select Set default message size restrictions.

    Office 365 now supports larger email messages 1 v2
    You can then specify the maximum message size for new mailboxes (only for those you create in the future).

    For existing users...

    To edit multiple mailboxes select recipients > mailboxes and select multiple mailboxes. Then from the Bulk Edit pane under Message Size Restrictions select Update.

    Office 365 now supports larger email messages 3 v2

    You can customize a single mailbox by selecting recipients > mailboxes and then select a user’s mailbox. Click the edit icon , then under Message Size Restrictions, click View details and then specify the maximum message size.

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