Ugly resulting email from Mail Merge

I am experiencing issues sending emails from Zoho.

This is how my message looks in Zoho Writer: http://www.imagebam.com/image/ad2e58255251536

However, when received, it looks terrible:

This is how it looks when viewed in webmail: http://www.imagebam.com/image/8674db255251643

and in Outlook: http://www.evernote.com/shard/s159/sh/f2c8a2c3-f958-4288-b384-6b6d907b3583/7285122d895019881503159c5af01624

Obviously I cannot send out my newsletter until I can get it looking professional. How can I get my emails to be formatted as they look in Zoho?