POP may refer to any of the following: 1. Short for Post Office Protocol, POP or POP mail is one of the most commonly used protocols used to receive e-mail on many e-mail clients. There are two different versions of POP: POP2 and POP3. POP2 was an early standard of POP that was only capable of receiving e-mail and required SMTP to send e-mail.
Zach Herron a 16 year old emerging pop artist / singer songwriter from Dallas, TX. He is 1/5th of Why Don't We. His vocal styling has been compared to Justin Bieber, Shawn Mendez, and Ed Sheeran to name a few.
Today, 5 March 2013, 11 year old Zach Atkinson from Manchester joins the cast of Billy Elliot the Musical at the Victoria Palace Theatre to play Billy Elliotâs best friend Michael. He alternates the role with current Michaels, Joe Massey and Thomas Moore.