To send an email, the client must first provide the address of the recipient with `RCPT TO:`. Then it uses the `MAIL FROM:` with the address of the sender. Both the recipient and the sender are accepted by the server. The client can now issue the `DATA` command to start the transfer of the email message. After having received the `354` reply code, the client sends the headers and the body of its email message. The client indicates the end of the message by sending a line containing only the `.` (dot) character [#fdot]_. The server confirms that the email message has been queued for delivery or transmission with a reply code of `250`. The client issues the `QUIT` command to close the session and the server confirms with reply-code `221`, before closing the TCP connection.