GNU Mailutils
	General-Purpose Mail Package	Official GNU Software

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3.5.2.7 Displaying Information

Mail command: =

Displays the current message number.

Mail command: headers [msglist]

Mail command: h [msglist]

Lists the current pageful of headers.

Mail command: from [msglist]

Mail command: f [msglist]

Lists the contents of ‘From’ headers for a given set of messages.

Mail command: z [arg]

Presents message headers in pagefuls as described for headers command. When arg is ‘.’, it is generally equivalent to headers. When arg is omitted or is ‘+’, the next pageful of headers is displayed. If arg is ‘-’, the previous pageful of headers is displayed. The latter two forms of z command may also take a numerical argument meaning the number of pages to skip before displaying the headers. For example:

? z +2

will skip two pages of messages before displaying the header summary.

Mail command: size [msglist]

Mail command: si [msglist]

Lists the message number and message size in bytes for each message in msglist.

Mail command: folders

Displays the value of folder variable.

Mail command: summary

Mail command: su

Displays current mailbox summary. E.g.:

? summary "/var/spool/mail/gray": 23 messages 22 unread