imap_body
- imap_body() returns the body of the message,
numbered msg_number in the current
 mailbox.
 - The optional options are a bit mask
 with one or more of the following:
 - FT_UID - The msg_number is a UID
 - FT_PEEK - Do not set the \Seen flag if not already set
 - FT_INTERNAL - The return string is in internal format, will
 not canonicalize to CRLF.
 
 - imap_body() will only return a verbatim copy of the
 message body. To extract single parts of a multipart MIME-encoded
 message you have to use imap_fetchstructure() to
 analyze its structure and imap_fetchbody() to
 extract a copy of a single body component.
 imap_binary
 imap_bodystruct
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