B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
7.8%
7.8% -- reply rate for B2B cold email A/B tests (2026)
A mid-market B2B SaaS company achieved a 7.8% total reply rate on cold outbound after four sequential A/B tests over a 90-day period.
- Hypothetical worked example / case study of a single B2B SaaS company running four sequential tests over 90 days
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
7.8%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
95
Source Trust
50
Citation Chain
90
Independence
30
Methodology
45
Freshness
79
Source
Unify
Primary
Tier A
https://www.unifygtm.com/explore/cold-email-ab-testing-statistical-rigor ↗
Source Article
Cold Email A/B Testing: Sample Size Math and Platform Config
TL;DR: Most cold email A/B tests produce noise, not signal, because teams run them on fewer than 200 recipients per variant without checking statistical significance. At a 3.43% average reply rate baseline, detecting a 20% lift requires roughly 1,560 emails per variant at 95% confidence. This guide …
Original Research
Unify
· Original study ↗
Methodology
Outcome after sequential A/B tests
Methodology documented
Segmentation
Channelcommon_crawl
Cite this stat
Plain Text
B2B cold email A/B tests: 7.8% reply rate. Source: Unify (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/cold-email-ab-test-compounding-effect
HTML Embed
<blockquote cite="https://lighthousedata.io/data/cold-email-ab-test-compounding-effect" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>7.8%</strong> -- reply rate for B2B cold email A/B tests<br><small>Source: Unify (2026) · <a href="https://lighthousedata.io/data/cold-email-ab-test-compounding-effect" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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