A mail message has three parts: the header, the information lines, and the text.
A message header contains the following information.
The header is always present. The size of the message is given in terms of lines and characters: for example, you might see
(10/281)
in a header, indicating the message consists of 10 lines, containing 281 characters. The time that the message was sent is given in terms of a 24-hour clock in the sender's time zone. For example, you might see
Wed, 11 Dec 93, 21:34:56 PST
in the header.
The information lines follow the message header. The lines appear in the following order:
Other information may be included in certain types of messages.
The text of a message follows the information lines. The text can be as long as desired--there is no maximum length. Items in the Unread drawer do not have any associated text, since they are just notifications that a real message is waiting elsewhere.
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