Since May 07, when the post office changed their rates and added surcharges for squares, vertical envelopes etc., there has been widespread confusion. One dealer in New Orleans told me that the post office sent postage due slips to recipients after the host had confirmed the cost of postage for their weighed invitation was correct. Save the dates cards were returned because the clerk told the bride one amount and the processing center sent them back for insufficient postage.

Here is a link to postal rates which is very confusing:

Please post any suggestions or experiences. May, 2008 there is another rate change scheduled. Any suggestions?