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Campaign ops

HTML Email Tester

Paste HTML email markup to preview it and scan for common issues like missing alt text or unsubscribe links.

Live preview
Copy & deliverability

Subject Line Tester

Score your subject line for length, clarity, spam risk, and open-rate signals — then try Mailivate’s free AI subject tester.

Open tool → Copy & deliverability

Spam Checker

Paste a subject and body to flag spammy phrases, shouting, and other inbox-risk patterns before you send.

Open tool → ROI & revenue

Email ROI

Estimate return on email marketing from list size, open rate, click rate, and average order value.

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