Until there are some standards for HTML rendering in email clients and web browsers, or until hell freezes over (whichever comes first), it is a good idea to test your HTML design across the growing number of email clients and web browsers. Litmus (formerly SiteVista) offers both website and HTML email testing services.
Testing both your email and landing page compatibility is important, because having your email rendered properly is only half of the battle. Hopefully, your email recipients are clicking on links within your messages and arriving at your landing page to take the action you want them to. What each recipient sees on your landing page may vary depending on the Internet browser that they use. So, testing your landing page(s) is as important as testing your email message.
We mentioned this email testing service last year when it was still offered by the SiteVista brand. Now, as Litmus, they have added Yahoo! Mail to the mix or email clients and Opera 9.5 to the list of browsers supported for testing.
They offer a 30-day free trial if you want to give it a whirl.
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