Question: You want to perform an A/B test in HubSpot. You have 900 recipients for your email. What is the best distribution for your test?
- 25% version A, 25% version B, 50% winning version
- 30% version A, 30% version B, 40% winning version
- 50% version A, 50% version B
- You cannot perform an A/B test in HubSpot with this amount of recipients.
Explanation
HubSpot recommends sending an A/B test to at least 1,000 contacts for best results. With 900 recipients, the safer configuration avoids reserving a separate winning-version group. This allows the full audience to be used for comparing the two test variations. A winner-reserve setup would leave too few contacts in the initial test groups for reliable performance comparison.
Why the other options are incorrect
25/25/50 distribution is not the best choice because it reserves part of an already small audience for a later winner send.
30/30/40 distribution still reserves a winner group and reduces the test sample size.
Cannot perform an A/B test is too absolute because HubSpot recommends at least 1,000 contacts for best results rather than stating that testing is impossible.
Source for verification
https://knowledge.hubspot.com/marketing-email/run-an-a/b-test-on-your-marketing-email
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