Most of our invitations will need the 2oz rate.  Depending on the number of layers of the invitation, pockets or gate folds, envelope liner, and embelishments some invitations may need the 3 oz rate.  We will let you know the weight of your invitation once we enter the production stage.  The Response cards and envelopes will need the 1 oz rate.  Please keep in mind that square invitations and unusual shapes are also more expensive to mail. We will work with you to keep postage expense within your budget.