QuickBooks Unable to Send Email to Outlook Try some of the methods listed below and find a solution to the problem with email. Solution 1: Ensure that the QuickBooks is not Operating as an Administrator Solution 2: Configure the QuickBooks Email Preferences Set Properly Solution 3: Check that Internet Explorer's Email Option is Set Appropriately Solution 4: Test and Repair MAPI32.dll Solution 6: Try to Repair Outlook https://blog.accountantally.com/fix-quickbooks-is-unable-to-send-emails/