She then worked for ten years in the shipping and billing department of her father's company until 1989. In 1991, she began working for Snapple Beverage Corporation for her best friend's father, Arnold Greenberg, one of the three founders of Snapple. When Kaufman was a young child, she wrote her one and only fan letter to Greg Brady, which went unanswered. So, at Snapple, when she realized how many people were trying to connect with the company, she took it upon herself to answer all the letters, since she remembered how terrible she felt when Williams never replied. When it was discovered that Kaufman had been answering Snapple fan-mail in her free time, their brand newadvertising agency, Kirshenbaum & Bond, developed a campaign around her energetic personality. She appeared, until 1994, in television, radio, and print advertising wherein she answered letters written to Snapple with witty responses. Kaufman's 1990s Snapple ad trademark was to appear on camera with her head barely peeking out over the Snapple reception counter, giving the viewer the impression that she was incredibly short in stature. She would begin each commercial by saying in a thick New York accent that she received a letter from a particular Snapple fan, who would then be included in the commercial. Kaufman's humorous Snapple ads were well received, especially among members of Generation X, and she was partially responsible for a jump in Snapple's sales from 23 million dollars a year to 750 million a year in 1995. She was sacked in 1994, upon Snapple's sale to Quaker Oats. However, when Quaker sold Snapple to Triarc brands in 1997, they reinstated Wendy as the Snapple goodwill ambassador.
Acting
Kaufman is not an actress and she never vigorously pursued acting. However, she played a blackjack dealer in Vegas Vacation in 1997 and a bridal clerk in the 1998 filmEnough Already. She was also featured in the film Funny Valentine with Anthony Michael Hall, as well as the short-lived series The Beat. In 2013, she portrayed Minnie, a loan company employee, in the film College Debts.
Post Snapple
enlisted Kaufman in a variety of projects. She was featured on the popular show I Love the 90s and has appeared on the Americanreality showCelebrity Fit Club 1 & 2 and All Access: Where Are They Now: Celebrity Fit Club. From her experience on these shows, Wendy has found a new money-making venture; she is a partner in Wendy Wear, a new venture which will make clothes for plus-sized women. During an interview on Fox News, Kaufman explained that an executive of Cadbury Schweppes, the owner of the Snapple brand, fired her in March 2008. According to Newsday, Kaufman claimed that Cadbury Schweppes made her an offer, but that she "couldn't accept the contract because it was so one-sided and worth nothing".