/mcpGET https://<connection-server>/vmrest/users/<objectid>/messagehandlers/<object Id> Accept: application/json Connection: keep-alive The following is the response from the GET request and the actual response will depend upon the information given by you: Response Body: { "URI":"/vmrest/users/9375d893-c8eb-437b-90bf-7de4b1d0c3e8/messagehandlers/583722c8-e93b-42f0-8052-b75aa1ededb8" "ObjectId":"583722c8-e93b-42f0-8052-b75aa1ededb8" "SubscriberObjectId":"9375d893-c8eb-437b-90bf-7de4b1d0c3e8" "UserURI":"/vmrest/users/9375d893-c8eb-437b-90bf-7de4b1d0c3e8" "RelayAddress":Texoma@cisco.com "VoicemailAction":"2" "EmailAction":"2" "FaxAction":"2" "DeliveryReceiptAction":"1" } Response Code: 200 Update Message Actions First hit the URI: https://<connection-server>/vmrest/users/<user-objectid> Then fetch the following URI from the response body: https://<connection-server>/vmrest/users/<user-objectid>/messagehandlers/<object Id> <MessageHandler> <VoicemailAction>2</VoicemailAction> <EmailAction>2</EmailAction> <FaxAction>2</FaxAction> <DeliveryReceiptAction>1</DeliveryReceiptAction> <RelayAddress>cguii@10.com</RelayAddress> </MessageHandler> Response code: 204 JSON Example PUT https://<connection-server>/vmrest/users/<objectid>/messagehandlers/<object Id> Accept: application/json Content-type: application/json Connection: keep-alive { "EmailAction":"2", "FaxAction":"2", "DeliveryReceiptAction":"1", "RelayAddress":"john@cisco.com" } Cisco Unity Connection Provisioning Interface (CUPI) API 64 Cisco Unity Connection Provisioning Interface (CUPI) API -- User Message Actions API Update Message Actions