They claim they offer a free trial, but they will not let you cancel that free trial from the website until 48 hours have passed. For immediate cancellation, you have to go through the "manual flow" w... See more
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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 (perp... See more
Company replied
When using marketo tracking links, Marketo encodes the url and it becomes a 200 workable link but when reality, it is a broken or internal link masked as an 301 redirect. It would be a great improveme... See more
Misleading Results and a Waste of Time I’m very disappointed with Email on Acid. The platform flagged significant formatting issues with my email HTML on Google Pixel phones, Gmail on Chrome on... See more
Company details
Information provided by various external sources
Use Email on Acid to test your emails across the most popular clients, apps and devices, then go further to measure performance, find and fix errors - even if you don't know HTML. Free Trial.
Contact info
5500 Greenwood Plaza Blvd, Ste 220, 80111, Greenwood Village, United States
- (720) 242-7633
- hello@emailonacid.com
- emailonacid.com
Hasn’t replied to negative reviews
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Free trial cannot be canceled online
They claim they offer a free trial, but they will not let you cancel that free trial from the website until 48 hours have passed. For immediate cancellation, you have to go through the "manual flow" which means contacting support via email and waiting for them to get back to you. I asked, and they claim this is because people "accidentally cancel" - but obviously it's just to add friction so you forget to cancel it.
Misleading Results and a Waste of Time
Misleading Results and a Waste of Time
I’m very disappointed with Email on Acid. The platform flagged significant formatting issues with my email HTML on Google Pixel phones, Gmail on Chrome on Windows 10, and more. Based on this, I wasted two whole days trying to fix problems that turned out not to exist.
After borrowing a friend’s Windows 10 laptop to test Gmail on Chrome myself, none of the flagged issues appeared when I logged into my Gmail account. Everything displayed perfectly.
I feel like I wasted an entire weekend due to inaccurate results from the tool. I definitely won’t be recommending Email on Acid to anyone. Luckily it was the FREE 7-day trial and I had not paid for this bad experience!
The price just keeps going up and up
The price just keeps going up and up. They say it’s because of new features that they keep adding, but as a dev I just want to test the email rendering and don’t need any of the other features. They are forcing unneeded features onto the users and are charging them.
EOA, you need to offer different packages. As a freelancer, £100 a month is just not affordable just to test a few emails per month. I don’t want your other features, stop forcing and charging me for them, please!
Very disappointing company ethics
I had a free trial which I forgot to cancel and was charged $179 for. I canceled my subscription on the day I was charged and have since tried to contact the company via email, phone, Twitter and their contact form - with no response whatsoever.
I obviously understand that this is my own mistake for not cancelling in time but would have expected the company to be more forthcoming - or to at least reply to any of my requests.
Quite sad to see that their business relies on such shady tactics, rather than customers who actually want to use their product.
Fraudsters
Very disappointed with the services provided by this company. Appeals in my question were ignored. This company is a scammer. I had a test period. Before the end of the test period, I asked in chat to delete my account with my payment information. The account was deleted, but my card was charged $179 after the test period ended. The services were suspended early. Can you explain on what basis I was charged? No one is responding to my inquiries by mail . My nickname was "komodnik" in the system. Please contact me and get my money back.
The resolution for this issues doesn't…
The resolution for this issues doesn't seem applicable for our client, specially when we were not presenting the issue on litmus or the mobile part of Email on Acid. Also with the pixel sizing information provided doesn't seem that the particular mailings were not going over.

Reply from Email on Acid
EOA Rocks!
I am a freelance Email Developer, and since I purchased a monthly EOA membership, my clientele has increased by 60%. Clients love the fact that I can test their emails on my own and send them a link where they can see how their emails are rendering. I rarely have to go looking for work now. Love EOA!
4 stars
A really good product. Some versions in another language would be the fifth star! Thank you
Just two things I've looked at that…
Just two things I've looked at that could enhance the experience on EoA.
1.- Avoid the two clicks I need to do on the main page once logged in to see my projects.
2. Automatically update my test on mobile and desktop devices when I save my changes on the HTML area.
Great product - A must need to do it right!
Great product, a must need for email marketing to do it right! Using this tool has yielded over a 15% increase in user engagement.
Support was really patient with me as I…
Support was really patient with me as I got the contract set up!
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.
Seems very useful tool
Email on Acid is really good and the…
Email on Acid is really good and the exact tool we need to test email responsivness
Do you plan to make a french version ?
Hello EmailOnAcid Team,
Your tools are great. Do you plan to make a french version ? (or other languages) that's will transform in 5 stars ! Thanks
Images not rendering
There's a general slowness on the platform and sometimes images are not rendering in the previews.

Reply from Email on Acid
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.

Reply from Email on Acid
Always have some email clients cannot…
Always have some email clients cannot capture previews. It happened daily.
This is a top-notch outfit that always…
This is a top-notch outfit that always comes thru for you.
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