Is hard to help without knowin the html code for the email. But I look to a course in
treehouse about html mails, and here are some advices I can give you.
Use
table
elements as grid. Don't use
divs
, since many mail clients change those divs.
Use inline CSS, don't refere to external css files.
Test your emails in tools like
mailchimp
Make yourself an trial account on treehouse and search for the course
html emails