openssl s_client -crlf -connect imap.gmail.com:993
tag login user@gmail.com passwordhere
tag list "" "*"
tag select "inbox"
tag fetch 1:3 body[header]
tag fetch 3 body[header]
tag fetch 3 body[text]
tag fetch 2 all
tag fetch 2 fast
tag fetch 2 full
tag fetch 1 (body[header.fields (from to subject date)])
tag fetch 2 rfc822.text
tag search subject "text here"
tag search text "text here"
tag search charset "utf-8" subject "text here"
tag examine inbox.label2
tag select inbox.label2
tag close
tag logout

http://bobpeers.com/technical/telnet_imap