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Use cases Hero Block Testing
Primary metric · conversion rate

Hero Block Testing

The core use case for most teams

Example verdict · Winner found

"Urgency" outperformed 2 other variants. Conversion rate: 3.1% vs 2.5% (control). +310 additional conversions, +£14,200 additional revenue. 97% confidence.

The hero block is where browsing turns into buying. It is the first thing a reader sees after opening, it carries the offer, and it drives the initial click, so the creative direction you choose here moves conversion rate and revenue more than almost any other decision in the email. Urgency, exclusivity, social proof and benefit-led approaches can each produce a meaningfully different conversion rate, and the gap is rarely obvious before you test.

How liftstack handles hero block testing

  • Create a hero snippet with two or three variants, each taking a different creative approach.
  • Set conversion rate or revenue per exposure as your primary metric, so the verdict is denominated in money.
  • Read results within hours for flow campaigns with audiences of 40,000 and above. Broadcast campaigns with lower conversion rates may need a larger audience or a higher-funnel primary metric such as click rate or open rate.
  • Cross-campaign learning surfaces which tonal strategies win for your audience over time.

Why hero blocks compound

After five campaigns the patterns start to show. Urgency might win four times in five for your audience; social proof might underperform every time. Because the hero block appears in every campaign, each verdict feeds the next, and the learning informs your wider content strategy rather than a single send.

Getting started

Take your highest-traffic campaign and test three approaches: your existing copy as the control, an urgency variant and a benefit-led variant. That gives you a baseline and a clear read on what your audience responds to.

Pick your highest-revenue template and test the main block.
One campaign is usually enough to get a clear signal.
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