S/MIME receipt requests behavior

This policy setting controls how Outlook handles S/MIME receipt requests.

If you enable this policy setting, you can choose from four options for handling S/MIME receipt requests in Outlook:

- Open message if receipt can't be sent
- Don't open message if receipt can't be sent
- Always prompt before sending receipt
- Never send S/MIME receipts

If you disable or do not configure this policy setting, when users open messages with attached receipt requests, Outlook prompts them to decide whether to send a receipt to the sender with information about the identity of the user who opened the message and the time it was opened. If Outlook cannot send the receipt, the user is still allowed to open the message.

Supported on: At least Windows 7
Handle messages with S/MIME receipt requests in the following manner:


  1. Open message if receipt can't be sent
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namerespondtoreceiptrequests
    Value TypeREG_DWORD
    Value0
  2. Don't open message if receipt can't be sent
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namerespondtoreceiptrequests
    Value TypeREG_DWORD
    Value3
  3. Always prompt before sending receipt
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namerespondtoreceiptrequests
    Value TypeREG_DWORD
    Value1
  4. Never send S/MIME receipts
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namerespondtoreceiptrequests
    Value TypeREG_DWORD
    Value2


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