Subject Line Pro is a virtual subject line test that delivers real accurate results in seconds.
With Subject Line Pro, you can create a virtual simulation of your subscriber base to predict likely open, click and delivery rates for any given subject line.
Subject Line Pro's proprietary algorithm quickly predicts subjectline performance within 1-2% of actual open rates.
|LIVE A/B SPLIT TEST||
Subject Line Pro
VIRTUAL A/B TEST
|Sample Size||Usually < 10% of your database||Your entire database|
|Time to Setup Test||15 Minutes - 1 Hour||30 seconds|
|Time for results||Hours, if not days||Instant|
Losing best performance
x sample size