A/B Split (Email)
01 Definition
A/B Split (Email) meaning: Sending two versions of an email to compare which performs better.
An A/B split test sends version A to one random portion of a list and version B to another, changing just one element such as the subject line. The version with the better result on a chosen metric wins. Testing one variable at a time keeps the outcome clear, and results are more trustworthy with larger samples.
Also called
Why it matters
How A/B Split (Email) fits the work
It replaces guesswork with evidence, letting you learn what your specific audience responds to before committing a full send to one approach.
In context
A brand tests two subject lines on 20 percent of its list, then sends the higher-opening version to the remaining 80 percent.
Practical note
Small lists can produce differences that are just random noise, so confirm the sample is large enough before declaring a winner or rolling the change out.