SSRS report subscription delivered via email condenses report to an undesireable size when viewed in Outlook

Hi friends - I've created a basic report that renders to 8.5in in width when I export to web archive format in Report Server. However, when I receive the report embedded in an e-mail it is condensed to an undesireable width. I understand the report is placed in a table withing the email body. Can I define the size of this table somehow?
Any help in this regard is highly appreciated..

thanks