Returned +notification information

The ReturnValue property returned by callback is an array of objects containing the requested notification information +on new messages. Each item (object) in the array corresponds to one new message +and contains the header information for that message.

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**Table:** ReturnValue properties +for notification information
+ Property +	+ Type +	+ Notes +
+ `<item>.MessageType` +	+ string +	+ Possible values: + + `"SMS"` + `"MMS"` + `"unknown"` + + The Messaging Service only supports SMS and MMS. Other types of messages +are `unknown`. +
+ `<item>.Sender` +	+ string +
+ `<item>.Subject` +	+ string +	+ Since SMS does not support subject, this property contains the first +few characters of `BodyText`. +
+ `<item>.Time` +	+ object +
+ `<item>.Priority` +	+ string +	+ Possible values: + + `"Low"` + `"Medium"` + `"High"` + +
+ `<item>.Attachment` +	+ boolean +
+ `<item>.Unread` +	+ boolean +
+ `<item>.MessageId` +	+ number +