EnvelopeGmailMessageId Property

Gmail provides a unique message ID (X-GM-MSGID) for each email so that a unique message may be identified across multiple folders. The message ID is a 64-bit unsigned integer. This property is set only if server advertises XGMailExtensions1 extension support.

public decimal? GmailMessageId { get; }

Public ReadOnly Property GmailMessageId As Decimal?
	Get

public:
property Nullable<Decimal> GmailMessageId {
	Nullable<Decimal> get ();
}

member GmailMessageId : Nullable<decimal> with get