Header cut off when forwarding with apple mail

Hi,
I successfully created and html email and it looks good in every email client I've tested.  I'm having an issue where the top part of my email is cut off when I forward the email with apple mail.  Has anyone else had this issue and does anyone know how to solve this problem?
Thanks in advance,
John

See why 200,000 companies worldwide love Campaign Monitor.

From Australia to Zimbabwe, and everywhere in between, companies count on Campaign Monitor for email campaigns that boost the bottom line.

Get started for free