LetterAgent
Mail physical letters by just asking your AI assistant.
Home > Guides > Find someone's mailing address
Start with the person, not the databases: ask a mutual friend or message them directly if you are in touch. Public options include white-pages sites and property or voter records. But be honest: without a real, complete address, you cannot send the letter, since a mailing service needs one to print and mail anything.
The simplest source is the person themselves. If you are in touch by text, email, or social media, just ask: most people hand over a mailing address without a second thought when they know a letter is coming. Mutual friends and family members are the next best source, especially for wedding invitations, holiday cards, and thank-you notes, where the address list naturally lives in the social circle.
Beyond that, public records do real work. White-pages and people-search sites aggregate address histories, and they are often right for people who have lived somewhere a while. County property records show the owner of a house, and voter registration lists are public in many states. For businesses, the address is usually on their own website or in state business registries. The common thread: these sources work best when you already know roughly where the person lives and need to pin down the exact address.
| Source | Best for | Watch out for |
|---|---|---|
| The person, or a mutual contact | Invitations, cards, personal letters | Nothing, this is the gold standard |
| White-pages and people-search sites | Long-time residents | Stale addresses and lookalike names |
| Property and voter records | Homeowners, registered voters | Records lag moves by months |
| Business websites and registries | Companies and professionals | PO boxes and registered-agent addresses |
Here is the option most people have never heard of. The post office will hold mail for someone who has no fixed address through a service called General Delivery. You address the letter to the person's name, write GENERAL DELIVERY, then the city, state, and ZIP of the post office where they will pick it up. The post office holds it for about a month.
General Delivery is a genuine workaround when the recipient is traveling, between homes, or unhoused. But it has limits: not every post office offers it, the recipient has to know to go ask for the letter, and it only works through the post office counter, not through a mailing service. LetterAgent needs a complete delivery address to print and mail a letter, so General Delivery is a do-it-yourself option.
Do not guess. An address you are "pretty sure" about is how letters end up opened by strangers or bounced back to you. Do not use an old address from years ago without confirming it first: people move, and forwarding orders expire after a year, so a three-year-old address is a coin flip at best.
And respect the privacy line. Tracking down someone's home address from public records to send an uninvited letter can feel invasive to the recipient, especially after a falling-out or a breakup. If the person has not shared their address with you, consider whether a letter is the right move at all, or whether the message belongs in a channel they already use. When in doubt, the mutual friend who has the address can also ask whether the letter would be welcome.
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.
Need help? Ask your assistant: it can check a job's status any time. If it ever can't handle something: hello@getletteragent.com