Can I send a bottle of wine through USPS?
No. USPS Publication 52 section 422 permits mailing of alcohol-containing products only when they are not a taxable alcoholic beverage, and lists mouthwash and cooking wine as the kind of thing it means. A drinkable bottle of wine is nonmailable.
So how does wine ever move through the mail?
It moves through UPS and FedEx, not the Postal Service, and only under a written contract with a licensed winery or retailer. Every bottle is dropped with an adult-signature service; a walk-in consumer parcel is not part of the program.
What happens if I put a bottle in a Priority Mail box anyway?
Misdeclared contents void carrier liability and can get the parcel intercepted, destroyed rather than returned, and referred for fines. A leak-stained carton is what usually reveals it, and no claim runs on a shipment the tariff refused to accept in the first place.
Can I use one of the private carrier programs as an individual?
Not by yourself. UPS wine service is limited to shippers licensed under applicable law who have signed a UPS contract. FedEx spells the rule out plainly: individuals cannot ship alcohol via FedEx. Both programs are for wineries and retailers.
What can go in the mail that has alcohol in it?
Products that hold alcohol but are not sold as beverages. USPS Publication 52 names cold remedies, cooking wine and mouthwash as examples that clear its four-part test when they are neither poisonous nor flammable. Empty collectible bottles and barware also ship as ordinary fragile goods.