SiteVista recently launched a new email testing service that will help you to be sure your emails appear correctly. The tool is very similar to Browsercam in that it will let you see rendered versions of your message as it would appear in AOL, Gmail, Hotmail and Outlook.
They will be adding other email clients over the next few weeks, such as: Yahoo! Mail, Outlook Express, Eudora, Lotus Notes, Thunderbird, Windows Live Mail, Apple Mail, and Entourage.
It works by you sending an HTML email to the address they provide. For every email you send, you receive two screen captures. One of the email as it is displayed in the software’s preview pane, and one showing you the entire message once it’s been opened.
Anyone dealing with email newsletters on a regular basis will know how time-consuming testing can be - if you're spending more than a couple of hours a month on it, SiteVista may well prove to be just the solution you've been looking for.