add return carriage from input field after post in php

[Feabirtytab]

Hello all I am working on a project at work where people can send emails from a certain part of the site. There is a body textarea field which represents the body of an email. Return carriages show up on the textarea but when I POST the data and send the email everything shows up on one line. How would I express this when the email is sent so that the return carriages are included in the email format. I am using PHP to send textarea information to my PHP script via the POST array. Any help would be greatly appreciated