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From the app: To use this app, your mailbox must be running on * Exchange Server 2013 CU3 That requirement may hurt adoption.

• deleted 12y ago
  [deleted]
• m_st 12y ago
  From the app description: 'Outlook works with Microsoft Exchange, Office 365, Outlook.com, iCloud, Gmail and Yahoo Mail.'
  • c1sc0 12y ago
    And (sadly) that covers 90% of email setups.