Gets and sets the property Source. 
            
The identity's email address.
                        By default, the string must be 7-bit ASCII. If the text must contain any
            other characters,             then you must use MIME encoded-word syntax (RFC 2047)
            instead of a literal string.             MIME encoded-word syntax uses the following
            form:  CopyC#.             For more information,
            see RFC 2047.
CopyC#.             For more information,
            see RFC 2047.        
            =?charset?encoding?encoded-text?=
 Declaration Syntax
 Declaration Syntax| C# | 
public string Source { get; set; }