Casey McQuiston fan mail address
To send fan mail to Casey McQuiston, mail your letter to Casey McQuiston, c/o Author Mail, 120 Broadway, New York, NY 10271, USA. Casey McQuiston is a romance novelist — author of Red, White & Royal Blue, One Last Stop, and I Kissed Shara Wheeler. Letters reach Casey McQuiston through the author-mail desk at Macmillan (Casey McQuiston's books are published under its St. Martin's Griffin imprint), which forwards reader mail to its authors — never a private home. Authors do change publishers, so confirm Casey McQuiston is still with St. Martin's Griffin before sending. Don't enclose cash, gifts, or books to be signed, and add your return address if you're hoping for a reply.
Casey McQuiston — fan mail address
Casey McQuiston c/o Author Mail 120 Broadway New York NY 10271 United States
Fan mail and letters. This goes to the author-mail desk at Macmillan (Casey McQuiston's books are published under its St. Martin's Griffin imprint), which forwards reader mail to its authors — not a home address. Authors do change publishers, so confirm Casey McQuiston is still published by St. Martin's Griffin before sending.
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Casey McQuistonc/o Author Mail120 BroadwayNew York, NY 10271
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Key facts
- Letters go c/o Author Mail at Macmillan — a public office that forwards reader mail, never a home address (Casey McQuiston's books come out under its St. Martin's Griffin imprint).
- Casey McQuiston is a romance novelist: author of Red, White & Royal Blue, One Last Stop, and I Kissed Shara Wheeler.
- Authors change publishers; confirm Casey McQuiston is still published by St. Martin's Griffin before mailing.
- A personal reply or signed bookplate is never guaranteed — include your return address to improve the odds.
- Send letters only: publishers ask you not to send books to sign, gifts, or cash, and can’t forward parcels.
- PostPal prints your letter and mails it for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Confirm who publishes them now
Authors move between publishers, so before you send, check that Casey McQuiston is still published by St. Martin's Griffin (part of Macmillan) — see the sources below. If they've moved, address your letter to the new publisher instead. Some authors also list a preferred contact or agent on their own website.
- 2
Write your letter
Keep it to paper. Publishers forward reader mail but won't pass on cash, gifts, or valuables, and most ask you not to send books or items to be signed. Add your return address if you'd like a chance at a reply, though a personal response is never guaranteed.
- 3
Address it c/o Author Mail
First line: Casey McQuiston. Next line: c/o Author Mail. Then the publisher's address: 120 Broadway, New York NY 10271, United States. That building is Macmillan's office, which routes the letter to Casey McQuiston.
- 4
Send it from anywhere with PostPal
Write or upload your letter to PostPal with the address above prefilled. We print it, add your return address, and mail it for you — no printer, envelope, stamps, or trip to the post office.
Common questions
What is Casey McQuiston's fan mail address?
Casey McQuiston, c/o Author Mail, 120 Broadway, New York, NY 10271, USA. Letters go to the author-mail desk at Macmillan (Casey McQuiston's books are published under its St. Martin's Griffin imprint), which forwards reader mail to its authors — not a home address. Confirm Casey McQuiston is still published by St. Martin's Griffin before mailing.
Will Casey McQuiston read my letter or write back?
Maybe. Publishers pass reader mail to their authors, but best-selling writers receive far more than they can personally answer. Include your return address to give yourself the best shot at a reply or a signed bookplate, but treat a personal response as a bonus, not a guarantee.
Is this Casey McQuiston's home address?
No. This is the public head office of their publisher, Macmillan. We never publish authors' private home addresses — mailing someone's home would not be okay. Routing fan mail through the publisher is the standard, expected way to write to an author.
Can I send Casey McQuiston a book to sign or a gift?
Better not to. Macmillan — like most publishers — asks readers not to send books, photos, or items to be signed, and can't forward parcels, gifts, or cash. A letter is the surer bet; PostPal sends letters and printed documents, not packages.
How do I mail Casey McQuiston a letter without a printer?
Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip needed.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.