We put 7 free and low cost email testing and delivery tools to the test

You hear so many rumours about what you can or can’t include in your email if you don’t want it to land in spam. But a lot of those are exactly that, rumors.

Using an ESP, like VerticalResponse, is an excellent start to ensuring inbox placement, but spam filters look for various things in emails to determine where they end up. Are there too many linksin your email? Did you use the word “Free” one too many times? To help dispel the myths, we put some email testing and delivery tools to the test using the same HTML code and subject line from one of our recent newsletters. Here’s what we discovered:

Puts Mail

Puts Mail is a basic testing application, but you can get some good information about your HTML using this tool. First, they send you a test of your email, so you can see it in your inbox. If you’re using an ESP, you probably have this feature already, but if you don’t, it allows you to see your how your email will appear in the inbox of your choice.

Then the tool goes through your code and detects if there’s anything that could cause an issue and what that might be. Our newsletter checked out okay, though anyone using Lotus Notes or Eudora may have some issues with the CSS that was included. CSS is something that can be tricky in different email programs; if you’re using CSS, be sure to keep it inline to ensure it will work across a variety email programs. For more tips on HTML for emails, check out our HTML Tips for Designing Your Email guide.

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