The time the message was created.
def get_message_date() -> str: ...
message_date = property(get_message_date, None)
This property contains the date and time when the message was created. This value is taken from the ENVELOPE structure of the message corresponding to the date.
RFC 822 contains detailed date format specifications. An example of a valid date is "Fri, 1 Mar 96 21:24:52 EST".
This property is read-only.