1) Mail piece design - check the dimensions and positioning of your address block against USPS standards to help us get you the best postage rate possible - click here.
2) If your mailing will be tabbed (self-mailers or newsletters) - If you are creating a mailing that gets folded and tabbed, be sure you specify the correct number and position of tabs - click here.
3) For information about the USPS Move Update Standard, click here.
4) For current postage rates, click here to go to the official USPS postage pricing page.