The address to use in the envelope-from SMTP negotiation
[Visual Basic] Public Property MailFrom As EmailAddress [C#] public EmailAddress MailFrom { get; set; } [C++] public: __property EmailAddress* get_MailFrom(); public: __property void set_MailFrom(EmailAddress* ); [JScript] public function get MailFrom() : EmailAddress public function set MailFrom(EmailAddress);