Litmus shows you exactly how your designs look on every platform, across every popular web browser. (And the not-so-popular ones.)
Cost / License
- Paid
- Proprietary
Platforms
- Online



proofa.io is described as 'AI-powered email QA tool that catches typos, broken links, layout issues, and tone problems before send at a fraction of Litmus or Email on Acid's cost' and is a Email Marketing service in the business & commerce category. There are five alternatives to proofa.io, not only websites but also apps for a variety of platforms, including Chrome OS, Google Chrome, SaaS and Mac apps. The best proofa.io alternative is Litmus. It's not free, so if you're looking for a free alternative, you could try Inbox Pirates. Other great sites and apps similar to proofa.io are Email on Acid, Maildog.co and PreviewInbox.
Litmus shows you exactly how your designs look on every platform, across every popular web browser. (And the not-so-popular ones.)



Create a virtual simulation of your email in the top 15, most used email clients! Our Email Acid Test will analyze your code and identify exactly which HTML tags and/or CSS properties are not supported by each email client.



Inbox Pirates lets you preview, test, and analyze your email on various devices, and popular email clients. It also offers subject line and email content testing to improve email open rates.




Maildog monitors your email sending and provides you with actionable feedback on what to do to improve email deliverability.
Optimize your emails with comprehensive preview service, which includes an Inbox List Panel, Email Detail Page, and HTML generated from ISPs.



