Free tools

Useful email marketing answers without a form between you and the result.

Run transparent calculations and checks in your browser. Each tool explains its method, limitations, and the next decision.

AnalyticsFree Tool

Free Email Campaign Metrics Calculator: Opens, Clicks, Conversions, and ROI

Use a free, no-signup calculator for delivery, open, click, click-to-open, conversion, and ROI rates, then diagnose what to test instead of chasing one benchmark.

Free Email ToolsFree Tool

Free Email Subject Line Tester and Inbox Preview

Test an email subject line for length, wording, punctuation, capitalization, and visible personalization tokens, then preview likely mobile truncation. Free and no signup.

Free Email ToolsFree Tool

Free Email A/B Test Significance Calculator

Compare two email conversion rates with a free two-proportion significance calculator. See absolute rates, relative uplift, p-value, assumptions, and practical next steps.