Small Letters- Private and business letters up to 50 g and no bigger than 120 x 235 x 5 mm Medium Letters- Private and business letters up to 250 g and no bigger than 250 x 176 x 10 mm Large Letters- Private and business letters up to 300 g and no bigger than 353 x 250 x 30 mm Registered Mail- A separately streamed service with added security for mail items. Guideline- How to correctly address an envelope. - How to correctly address a parcel. |