You’re performing an A/B test in HubSpot. You set the slider distribution at 25% for version A, 25% for version B, and 50% for the winning version. You have 100 recipients. How many contacts will receive version A?

HubSpot requires enough recipients for a regular marketing email A/B test to run the configured distribution. When the recipient pool is too small, the test split does not apply. HubSpot sends the default version instead of dividing the audience into test and winning-version groups. In this case, version A is treated as the default email version.