The 1711 Act of June 9th (9 Anne c 10) instructed the master of the ship to hand inward letters over at the port of arrival, be paid one penny for each letter, or face a penalty for evasion.
- During the 18th century the Post Office issued the first “Shipp” / “Ship Letter” handstamps to postmasters at ports in Ireland to identify the letter as a ship letter and also the specific port of entry. This enabled the fee to be paid to the ships’ master and inland postage from port of entry to place of addressee to be calculated accurately .