How do email previews work?

Litmus delivers previews of your email in 90+ apps and devices in seconds.

1. Create an email in Litmus

Your email is sent to our fleet of 1600 machines, using real email clients that are logged in and ready to receive your email just milliseconds after it’s sent.

2. Our software opens your email

Our software instructs the email client to open your email, all without making any modifications to the email client itself.

3. Litmus captures screenshots

Litmus takes highly optimized, lightning-fast screenshots of your email, delivering the highest quality images that represent exactly what your recipients see.

4. You see your email in 90+ clients instantly

You receive previews of your email in 90+ clients just seconds after you sent it.

Test with Litmus wherever you work.

Preview and test your emails directly on your desktop or within your email service provider with the Litmus Extension.

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Efficiently create, edit, and navigate code faster than ever before with Litmus Builder.

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Get guided checks of the critical elements that affect performance before you send.

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