LetterAgent
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Home > Guides > Mail to a cruise ship
You don't address it to the ship at sea: you send it to a port of call, in care of the ship, timed to arrive before the ship does. Include the guest name, stateroom number, ship name, sailing date, and the port agent's address. Itineraries change, so this is never guaranteed. Note: LetterAgent mails to fixed US and Canadian addresses, not to ships; this is a general guide.
Cruise lines publish a mail address for each sailing, usually through their port agent: the local company that handles the ship's business in port. A typical address block looks like this:
Get the exact port-agent details from the cruise line before you mail. Lines change agents between ports, and a letter addressed to the wrong agent's office may never be forwarded to the ship. Crew mail goes through a different channel entirely, so don't use the guest process for a crew member.
| Sailing length | Best port to target | Why |
|---|---|---|
| A week or less | The embarkation port, well ahead of sailing day | Short sailings have few ports and tight port-call windows; mail arriving late misses the ship |
| Two weeks or more | A mid-itinerary port the ship visits late in the cruise | Gives the letter time to travel internationally and sit waiting at the agent's office |
| Any length, tight timing | Consider waiting instead | If the letter can't beat the ship to port, it arrives to an empty dock |
Three things can sink the plan. Itineraries change: weather, port congestion, or a medical diversion can skip a port entirely, and your letter waits at a dock the ship never visits. International mail to the port agent's country runs on that country's postal timetable, not yours. And port agents are busy operations: a personal letter is low priority next to the ship's supplies and paperwork. None of this means it won't work, but it means you should never put anything time-sensitive, like travel documents or medication information, in a letter to a ship.
For short messages, the ship's own communication options are more reliable: most lines sell internet packages the guest can use for email and messaging apps, which is how most onboard communication happens now. If you want a physical surprise, the better play is often to have flowers, a card, or a gift ordered through the cruise line's onboard gift service, delivered to the stateroom on embarkation day. And for anything that can wait, a letter sent to the guest's home address so it's waiting when they return never misses.
Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is printed and mailed.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
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