Post was born in Washington, DC and raised in Maryland and New Orleans. She finished Louisiana State University with a Bachelor of Science degree in education. She started her career as an international flight attendant for Pan American World Airways. After that she worked as a teacher for English and history in New York City. Later she entered a career in management, consulting and sales. Along with others she managed Chemical Bank in New York City. Post married the investment consultant Allen Post who is Emily Post’s great-grandson in 1979. Peggy raised two stepsons. In 1991, Peggy started to work with her mother-in-law Elizabeth Post who was the first successor to Emily Post and her granddaughter-in-law. Elizabeth Post revised Emily Post’s Etiquette book five times between 1965 and 1992. Post followed Elizabeth, who retired in 1995, as director and spokesperson of the Emily Post Institute. Today Peggy is author of more than twelve books including the 17th edition of Emily Post’s Etiquette. All books are published by HarperCollins. Peggy writes columns for different magazines like Good Housekeeping, Parents and USA Weekend. She is known as expert for wedding etiquette and publishes her advice in InStyle Weddings, WeddingChannel.com and 1-800-Flowers.com. Moreover, she holds lectures and seminars for businesses and community groups across the USA about appropriate behavior and etiquette. Post is of the opinion that the intention of etiquette is to make life easier and not more formal or rigid. Her style is not as formal as Emily Post’s, but refers to her and has updated it. Peggy Post latest edition of Emily Post’s Etiquette includes not only an Attire Guide Beach Casual to White Tie but sections on appropriate e-mail manners, how to graciously discuss a potential sex partner’s past and the circumstances under which one can re-gift in good conscience. She believes in etiquette as human social behavior to show respect and dignity and emphasizes the line between etiquette and diversity or acceptance. In an interview she stated that she found out that all these discussions about people being rude and uncivil leads to a search for a sense of order.
