C: COPY 3-5 8 "" Folders "Sent Mail"
      S: * COPY 3 NEWUID=1043320248/3601
      S: * COPY 4 NEWUID=1043320248/3602
      S: * COPY 5 NEWUID=1043320248/3603
      S: * COPY 8 NEWUID=1043320248/3604
      S: +OK Messages copied
The COPY command copies
    messages from the currently open folder to another folder.
    COPY is followed by
    whitespace-delimited words that enumerate messages to be
    copied, an empty word, then whitespace-delimited words that
    name the folder the messages are copied to.
“m-n” can be a
    shortcut designation for messages #m through #n, inclusive. The
    message number list must be in a numerically-increasing order,
    with no overlaps.
The server responds with one ore more * COPY single line replies, one reply for each
    copied message. The next word contains the message number of
    the copied message, followed by a list of attributes. At
    present time only one attribute is defined: “UID=id” gives the assigned
    unique id of the saved message in the destination folder.
      C: MOVE 3-5 8 "" Folders "Sent Mail"
      S: * COPY 3 NEWUID=1043320248/3601
      S: * COPY 4 NEWUID=1043320248/3602
      S: * COPY 5 NEWUID=1043320248/3603
      S: * COPY 8 NEWUID=1043320248/3604
      S: * EXPUNGE 3-5 8
      S: +OK Messages copied
The MOVE command is like
    COPY except that the messages are
    moved to the folder, instead of copied. Or, to put it another
    way, the messages are automatically removed from the current
    folder after they are copied.
The server also responds with “*
    COPY” that indicates messages that
    were copied to the destination folder; the subsequent
    “* EXPUNGE” messages
    indicate the messages were removed from the original
    folder.
The server's response to COPY
      or MOVE may include additional
      “* EXPUNGE”, “*
      EXISTS”, and “*
      FETCH” messages reflecting changes
      to the folder's contents by other applications that have the
      same folder opened.
Servers may, but are not required to, notify of other
      changes to the folder's contents as part of the response to
      COPY and MOVE.
Servers have several choices for handling requests to copy a message that were removed by another application. A server may handle this situation by doing any one of the following:
Respond with an “-ERR” and do
            nothing.
Copy some or all remaining messages, then report an
            “-ERR”.
Copy all remaining messages, as if the nonexistent
            messages were not specified at all by the client's
            MOVE or COPY.
In all cases the server's response must reflect which messages, if any, were actually copied. It is the user's responsibility to avoid running multiple applications that issue conflicting SMAP requests.