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Cold Email Body Optimizer

emailapi-pushdaily cycle

A/B test cold email bodies to maximize positive reply rates. Tests tone, length, CTA style, and personalization depth across outreach sequences.

Primary Metric

Positive Reply Rate

↑ Higher is better

Experiment Settings

Variants per round: 4

Max rounds: 10

Min sample size: 200

Guard Rails
Experiments auto-pause if these thresholds are breached
Max 0.1% spam complaint rateFloor: 0.1%
Max 0.5% unsubscribe rateFloor: 0.5%
Start Experiment →