If individuals want to automatically refuse foreign mail or block all mail from a specific sender, they must submit a written request to the USPS to withhold correspondence for up to two years.
1 liter = 33.8140226 US fluid ounces. 1 US fluid ounce = 0.0295735297 liters. Note that this is for fluid ounces, not dry ounces. A fluid ounce is a measure of volume, just like a liter is. A dry ounce is a measure of weight.
There are 0.029573529564112 liter in a ounce. 1 Ounce is equal to 0.029573529564112 Liter. 1 fl oz = 0.029573529564112 L. Known as the US fluid ounce, the unit of volume for liquid substances is used as ounce in the US and other countries practicing the US Customary system. It is equals to approximately 1/8 of US cup, 1/16 of US pint, approximately 1.040842731 Imperial Fluid Ounces, 2 tablespoons or 6 teaspoons.