Yes you can mail the letter on a later date, but remember the person will then get your letter late as well.
Yes, as long as the postage on the envelope is valid and the date on the postage is current, you can mail it a few days later. The postage machine prints the date of purchase on the postage, so it will be considered valid until that date.
The price of postage continues to go up. Where can I find an up to date site to let me know how much a postage stamp costs today?
44-Cent First Class : February 4th , 2011 .
Just mailed one today - $0.98
Postage is .45 for a letter 1oz. or less and a large envelope weighing 1oz. or less is .90
If you mean in 5 letters then it is: TODAY
One regular U.S. postage stamp (which currently cost 44 cents as of today, August 27, 2010) is all you need to mail a letter anywhere inside the U.S. Additional postage is decided by the weight of the letter, not where it's coming from and going to. One regular stamp is all you need for letters weighing up to one ounce. Letters over one ounce will require additional postage.
sure but you will have to make up the difference in postage fees
Yes, as long as the total matches the current postage rate.
08 may 2014 in 5 letters - as today is the 8th May then - today.
As of today 45/100 of a dollar or 45 cents
Went up to .46 in January