It represents the most traditional service used in and out the country, not asking special treatment from the sender. Every written communication being an official or personal correspondence is considered letter.
The letter should be closed to an envelope with rectangular shape and dimension not less than 90 *40 mm with tolerance +2 mm. The receiver’s name is written at the front side of the envelope and it takes almost 2/3 of the lower part on the right part.
The sender address can be written at the upper left corner. The stamp or the sign is settled up to the receiver’s address, starting from the upper right corner.
The letters are accepted with weight till to 2 kg within and out the country. The fees for letters in and out the country earthy and aerial and group weights, see the connections 1/1, 1/10, 2/16.