It is normal for packages shipped through the U.S. Postal Service (USPS) to have little or no tracking information available. USPS does not provide tracking for most services but instead provides delivery confirmation.
With delivery confirmation your package is usually only scanned when it arrives at your local post office and again at delivery. There is no pickup scan or other information that confirms your package was mailed.
Until your package arrives and is scanned at your post office you will see a message like the one below:
The U.S. Postal Service was electronically notified by the shipper on
April 6, 2007 to expect your package for mailing. This does not
indicate receipt by the USPS or the actual mailing date.