Switched from Litmus after some poor… Switched from Litmus after some poor customer service and aggressive sales calls. We tend to use for only HTML/CSS testing rather than the extended marketing tools but in terms of what we use it for I think it's been excellent so far and actually faster and more reliable than Litmus despite being much better value.

Always a relief to know what our emails… Always a relief to know what our emails look like on multiple platforms/OS. Would be great if there were suggestions on how to adjust the HTML code when the design looks different on certain OS (e.g. iphone X) though.

EoM doesn't handle multiple emails If you send more than one email to EoM "simultaneously", which seems to mean within the same second, it intermixes them, showing different emails for different rendered platforms, or no render (perpetual spinning circle) for some platforms. EoM said that I have to send the emails separately (by which, I think they mean take longer between emails.) That doesn't help me at all.

AMUST to check emails compatibility The system is a MUST to check emails in multiple browsers. Their pricing is affordable and the offerings are on par with competitors. Do find that troubleshooting one email does require creating new projects so I wish there was a better way to keep track of a template without new tests over and over.

A robust, reliable email testing tool While my company has had an Email on Acid subscription for a while now, this is my first time using it and I love it! The ability to fully QA my emails and ensure that the product going out to our database is optimized, accessible, and completely tested gives me confidence in our deliveries. The step-by-step guide for campaign testing is so user friendly that I learned while testing an upcoming email send. I would recommend this tool to anyone in need of a robust, reliable email testing process, and I'm excited to check out the Analytics options next!