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List health

Email List Growth Calculator

Project where your list lands after a few months of net new subscribers and churn.

Projected list size
Net growth
Growth %
Break-even new / mo
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.

Open tool →