<p>iknow that we need 3 stamps to mail the yellow envelope
but
ihave 41cent stamps
does it matter if i use 41? cuz i know there are 42 cent ones too</p>
<p>As long as the money adds up, it should be fine.</p>
<p>how much is the total?</p>
<p>The cost, I believe, usually depends on the weight/size. Usually, for the yellow envelope, it's $1, so any stamps adding up to this (equal or more) should be fine. If you want to make sure, you can just wait on line in the post office, they postmark it and print a "stamp" for it, and then you just pay the exact amount upfront.</p>