Email Script Token Help

So I am trying to make a robust email script that will end up displaying a sales rep signature. The reason for the script is we can and often have leads owned by one rep but the opportunity owned by another. So I want to do something that will look to see if an opportunity exists, if it does then display the opportunity owner details. Otherwise display the lead owner details. I have some of this code logic copied from another script that an developer created for us. My question is, how can I post the reps name, email, and phone number on seperate lines in the email? is this even possible? Any help is appreciated, thanks!