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Most sweepstakes are legally required to offer a no-purchase-necessary entry method, and that method is almost always a mail-in: you hand-print your name, address, phone, email, and date of birth on a small card, mail it in a hand-addressed envelope to the sponsor's PO box, and it counts as entries in the drawing. The sponsor's official rules page is the authority on every detail.
The details below come from three sweepstakes with rules pages live during the 2026 holiday season. They show how strict and how varied the requirements get:
| Sweepstakes | Card and envelope rules | Deadlines (2026) | Entry limits |
|---|---|---|---|
| Birdie Blankets Giveaway | Hand-print name, address, email, phone, date of birth plus the phrase "Birdie Blankets Giveaway Free Entry" on a 4x6 card; sign it; mail in a hand-addressed, stamped envelope | Postmarked by October 31, received by November 7 | One card per envelope; each card worth 75 entries |
| Cheeky Summer Sweepstakes | Hand-print on 3x5 paper; mail in a number-10 envelope with first-class postage; valid return address on the outer envelope; entry AND envelope must be handwritten | Postmarked by September 14, received by September 21 | One entry per outer envelope; no bulk shipments |
| GiveawayMyHouse | Hand-print the listed details on a 3x5 card; mail in a number-10 envelope with postage affixed | Postmarked by November 23, received by December 1 | No limit on valid, individually mailed, hand-printed entries |
Almost every sponsor specifies a card size, usually 3x5 or 4x6 inches, and requires the information to be hand-printed by you, the entrant, with no help. The details to include are remarkably consistent across sponsors: full legal name, complete mailing address, phone number, email address, and date of birth. Some add a phrase you must write, the name of the sweepstakes, or your signature confirming eligibility. The point of hand-printing is to prove a real person did the work: photocopies, typed cards, and mechanically reproduced entries are void in essentially every rules page, and some sponsors even ban entries prepared by a third-party organization. Write it by hand, yourself, every time.
Sponsors care about the envelope nearly as much as the card. The common rules: hand-addressed, first-class postage affixed (a real stamp, not metered mail, which some sponsors explicitly reject), a valid return address on the outer envelope, and each card in its own envelope. Bulk shipments, multiple entries in one envelope, are rejected almost universally. One sponsor's rules even require a verifiable and legible return address or the entry is deemed incomplete. The envelope rules exist for the same reason as the card rules: they make the entry method cost time and effort, which keeps the drawing fair and keeps sweepstakes companies within the law.
Both, and this is where the most entries die. Nearly every rules page sets two dates: the entry must be postmarked by one date and received by the sponsor by another. A late postmark fails no matter when it arrives; an on-time postmark that arrives after the receipt deadline fails too. One 2026 sponsor's rules state explicitly that a submission postmarked by the deadline remains valid even if processed after the entry period ends, but that is about processing, not about arriving after the receipt cutoff. In practice, mail your entry at least a week before the postmark deadline so both dates are comfortable. And keep proof of mailing: sponsors do not acknowledge entries or confirm receipt, so your receipt is your only evidence if there is a dispute.
US sweepstakes law is the reason. A promotion where you must pay to enter is a lottery, and private lotteries are illegal in most states. The free mail-in entry is what keeps a sweepstakes legal: everyone has an equal shot regardless of spending. That is why the mail-in method must be genuinely free and genuinely usable. The flip side is that sponsors are not required to make it easy, only to make it available, which is why the hand-printing, the specific card size, and the deadlines are so precise. Treat the official rules page like a checklist, satisfy every line, and your entry counts the same as any purchase-based entry.
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