A lessening in postal rates following Sir Rowland Hill's postal changes with the 1840 innovation of the postage stamp (Penny Black) saw the quantity of Valentines posted increment, with 400,000 sent only one year after its development, and introduced the less individual yet less demanding routine with regards to mailing Valentines. That made it feasible out of the blue to trade cards namelessly, which is taken as the explanation behind the sudden appearance of suggestive verse in a time generally smugly Victorian. Production expanded, "Cupid's Manufactory" as Charles Dickens named it, with more than 3,000 ladies utilized in manufacturing. The Laura Seddon Greeting Card Collection at Manchester Metropolitan University assembles 450 Valentine's Day cards dating from mid nineteenth century Britain, printed by the significant distributers of the day. The gathering shows up in Seddon's book Victorian Valentines (1996).

In the United States, the primary mass-delivered Valentines of emblazoned paper bind were created and sold soon after 1847 by Esther Howland (1828– 1904) of Worcester, Massachusetts. Her dad worked a huge book and stationery store, yet Howland took her motivation from an English Valentine she had gotten from a business partner of her father. Intrigued with making comparative Valentines, Howland started her business by bringing in paper bind and flower adornments from England. An essayist in Graham's American Monthly saw in 1849, "Holy person Valentine's Day ... is ending up, nay it has turned into, a national holyday." The English routine with regards to sending Valentine's cards was set up enough to highlight as a plot gadget in Elizabeth Gaskell's Mr. Harrison's Confessions (1851): "I burst in with my clarifications: 'The valentine I know nothing about.' 'It is in your penmanship', said he coldly Happy Propose Day." Since 2001, the Greeting Card Association has been giving a yearly "Esther Howland Award for a Greeting Card Visionary".

Since the nineteenth century, transcribed notes have offered approach to mass-created welcoming cards. In the UK, simply under portion of the populace burn through cash on their Valentines, and around £1.9 billion was spent in 2015 on cards, blooms, chocolates and other gifts. he mid-nineteenth century Valentine's Day exchange was a harbinger of additionally popularized occasions in the U.S. to follow. 

In 1868, the British chocolate organization Cadbury made Fancy Boxes — a finished box of chocolates — in the state of a heart for Valentine's Day. Boxes of filled chocolates rapidly moved toward becoming related with the holiday. In the second 50% of the twentieth century, the act of trading cards was reached out to all way of blessings, for example, giving adornments.

The U.S. Welcome Card Association appraises that roughly 190 million valentines are sent every year in the US. Half of those valentines are given to relatives other than spouse or wife, for the most part to youngsters. At the point when the valentine-trade cards made in school exercises are incorporated the figure goes up to 1 billion, and educators turn into the general population getting the most valentines. The normal valentine's spending has expanded each year in the U.S, from $108 a man in 2010 to $131 in 2013.