Case Study Delivery Email Benchmarks
Case study delivery emails share customer success stories with prospects and existing customers. These emails are central to B2B lead nurturing, helping prospects understand how similar organisations have achieved results with your product. In B2C, case studies build trust by showing real customer outcomes.
| Metric | Average | Above Average | Excellent |
|---|---|---|---|
| Open Rate | 28-40% | 45%+ | 55%+ |
| Click-Through Rate | 6-15% | 20%+ | 30%+ |
| Case Study Read/Download Rate | 3-8% | 12%+ | 18%+ |
| Click-to-Open Rate | 22-35% | 40%+ | 52%+ |
| Unsubscribe Rate | 0.3-0.6% | Below 0.2% | Below 0.1% |
Why Case Study Benchmarks Matter
Case studies are the most requested content type by B2B buyers during the evaluation stage. The email delivering them is the distribution mechanism that determines whether the content gets seen. A case study email with a strong subject line referencing measurable results (e.g., "How Company X Increased Revenue by 40%") consistently outperforms generic subject lines.
Benchmarks by Audience
| Audience | Open Rate | CTR | Download Rate |
|---|---|---|---|
| Prospects (lead nurturing) | 28-38% | 6-12% | 4-8% |
| Existing customers | 35-45% | 10-18% | 5-12% |
| Cold outreach | 18-28% | 3-8% | 1-4% |
Best Practices
- Lead with the specific measurable result in both the subject line and the email opening
- Include a direct quote from the featured customer — human voices outperform corporate language
- Segment case study distribution by industry, company size or use case so recipients receive the most relevant story
- Offer the case study in multiple formats including PDF download and on-page reading to accommodate different preferences
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Frequently Asked Questions
A good case study email open rate is 28-40%. Subject lines featuring specific, measurable results achieve the highest open rates. Sent to existing customers, open rates reach 35-45%.
For lead generation, gating case studies behind a short form is standard B2B practice. Expect 40-60% drop-off between email click and form completion. For existing customers or brand awareness, ungated case studies improve read rates by 2-3x.
Feature one case study per email. Multiple case studies in a single email dilute focus and reduce read rates. A series of single-case-study emails over several weeks performs better than one email containing multiple stories.