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.
Zachary Merrick or Zach Merrick is a member of All Time Low. The height of Zachary Merrick is 6ft 0in, that makes him 182cm tall. Zachary Merrick's height is 6ft 0in or 182cm while I am 5ft 10in or 177cm. I am shorter compared to him. To find out how much shorter I am, we would have to subtract my height from Zachary Merrick's height.