Sending online messages dating
String to be inserted at the end of the email header.
This is typically used to add extra headers (From, Cc, and Bcc).
Multiple extra headers should be separated with a CRLF (\r\n).
If outside data are used to compose this header, the data should be sanitized so that no unwanted headers could be injected.
Note: If messages are not received, try using a LF (\n) only.