Feature
Virtual Email Previews
Preview your email templates on virtual iPhones, iPads, and more — right inside the builder, no real devices needed. Because EmailBuilder.ai is powered by MJML, your emails render consistently across every email client. No need for expensive testing tools like Litmus or Email on Acid — MJML's bulletproof output means your emails just work.Virtual device previews
MJML bulletproof rendering
No Litmus subscription needed
iPhone, iPad & desktop virtual previews
Why you don't need expensive email testing tools
Virtual email previews
See exactly how your email template renders on iPhones, iPads, and more — no real devices needed. Our virtual preview engine simulates every screen size so you know your email looks perfect before you send.
MJML = bulletproof email rendering
Because EmailBuilder.ai is built on MJML, your emails compile to battle-tested HTML that renders consistently across Gmail, Outlook, Apple Mail, Yahoo, and every major email client. MJML handles the complex table layouts and inline CSS that email clients require — so rendering issues are virtually eliminated at the source.
No Litmus or Email on Acid needed
Traditional email testing tools like Litmus and Email on Acid are paid subscriptions just to preview emails. With MJML-powered bulletproof rendering and built-in virtual previews, you get the confidence you need without the extra cost.
Desktop, tablet & mobile previews
Preview your email templates across all screen sizes in one place. Check desktop, tablet landscape, tablet portrait, and mobile views — all generated from your actual email template.
The MJML Advantage
Bulletproof email rendering at the source
Most email builders generate fragile HTML that breaks in Outlook or looks different in Gmail. That's why teams pay for expensive tools like Litmus just to test rendering.EmailBuilder.ai is different. Every email is compiled from MJML — the open-source framework purpose-built for email. MJML automatically handles the complex table-based layouts, inline CSS, and email client quirks that cause rendering issues. The output is battle-tested HTML that works everywhere.The result: you can confidently send emails without paying for advanced email testing subscriptions. Our built-in device previews give you the extra assurance that everything looks great.LitmusPaid
Email on AcidPaid
Testi@Paid
EmailBuilder.aiIncluded
Virtual previews, no real devices needed
See exactly how your email looks on the devices your subscribers useiPhone 16 Pro Max
iPhone 16 Pro
iPhone SE
iPad Pro 12.9"
iPad Pro 11"
iPad Air
iPad Mini