Ali Demirbaş - Lab
TRGet in touch

SaaS & B2B

Should Lead Forms Require a Work Email? A/B Test Idea

A work-domain rule excludes some personal email addresses, but does not prove that a request is qualified or genuine.

  • SaaS & B2B
  • Qualified opportunity rate

Option A vs Option B

Two alternatives; neither is the incumbent.

Changed
Options
Page
SaaS & B2B
Difference
changed

Hypothesis

It may also block real buyers who use personal addresses. Compare qualified opportunities per visitor using the same post-submission qualification process.

How to run this test

Primary metric

Qualified opportunity rate

Compare qualified opportunities per assigned form visitor over the same follow-up period.

Other metrics

  • Valid form submission rateCompare valid submissions among eligible visitors who see the form.
  • Opportunity close rateCompare opportunities won using the same qualification rule and sales follow-up period.
  • Spam or invalid inquiry rateMeasure the share of submitted forms that are spam or cannot be verified.
  • Sales prequalification timeCompare time spent reviewing inquiries using the same method.

What to check before and during the test

  • RequirementCompare a mandatory business email domain with allowing personal email addresses.
  • QualificationKeep the sales qualification standard the same.
  • Domain ruleVerify and fix the domain list before launch.
  • Error messageGive a clear explanation when an address is rejected.
  • Business sizeReview small businesses without assuming email type determines lead fit.

Setup mistakes to avoid

  1. 1Do not make the blocked-domain list so broad that it rejects legitimate business providers.
  2. 2Explain why an address was rejected.
  3. 3Change only the email rule, not other form fields.
  4. 4Do not silently accept a personal address and disqualify it later.
  5. 5Do not relax verification based on conversion alone; review lead quality.