A little over a hundred years ago, it was acceptable to send babies through the US Mail.

As documented in the article, “Very Special Deliveries,” by curator of the Smithsonian’s National Postal Museum Nancy Pope, several children, including one “14-pound baby” were stamped, mailed and dutifully delivered by the U.S. Post Office between 1914 and 1915.

The practice, noted Pope, became affectionately known by letter carriers of the day as "baby mail."

According to Pope, with postal regulations, being few and far between in 1913, they failed to specify exactly “what” could and could not be mailed via the still very new parcel post service. So in mid-January 1913, an unnamed baby boy in Batavia, Ohio was delivered by a Rural Free Delivery carrier to its grandmother about a mile away. “The boy’s parents paid 15-cents for the stamps and even insured their son for $50,” wrote Pope.

Despite a “no humans” declaration by the Postmaster General, at least five more children were officially mailed and delivered between 1914 and 1915.

The US Postal Service has evolved to carry fraudulent ballots that will destroy the lives and future of children. Ahh, progress.

https://www.thoughtco.com/when-it-was-legal-mail-babies-3321266