With this script:

<?php

$mail2 = "Greetings,\n\n";
$mail2 .= "Your employer has requested that you take an ergonomic survey. This survey will help Some Company, Inc., to figure out how to better shape your work environment so it is more comfortable for you. You can take this survey online, at your earliest convenience. (Please note that we cannot process orders until all surveys are returned.)\n\n";

$mail2 .= "To take your survey, click the link below. If you have difficulties, log in manually using the provided username and password.\n\n";
$mail2 .= "Some kind of url\n\n";
$mail2 .= "Username: username\n";
$mail2 .= "Password: password\n\n";
$mail2 .= "From the page above you can choose to take the survey online, or download and print it out to fax in to our offices.\n\n";
$mail2 .= "If you have any trouble logging in, please try to copy and paste your username and password directly from this email. If that still doesn't work, please feel free to call or write for assistance.\n\n";
$mail2 .= "Thank you for your participation! We look forward to working with you.\n\n";
$mail2 .= "Some User\nSome Company, Inc.";	

echo $mail2;

mail('email address','test mail problem',$mail2,'From: someemail address');

?>

If you reproduce that script you will see that on the line "From the page above..." it inserts a > before "From".