B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
19%
19% -- email flow revenue growth rate for NuStrips (Klaviyo email flows) (2026)
NuStrips achieved a 19% increase in Klaviyo email flow revenue by using Optimizer.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
19%
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Maverick (trymaverick.com)
Primary
Tier B
https://www.trymaverick.com/blog-posts/12-best-welcome-email-subject-lines-to-impress-new-customers-… ↗
Source Article
12 Best Welcome Email Subject Lines to Impress & Optimize with AI
A welcome email is more than just a digital "hello." It's your chance to roll out the red carpet for new subscribers, make a killer first impression, and set the stage for a beautiful, long-lasting relationship (the kind that involves repeat purchases and glowing reviews, of course).
And what's the …
Original Research
Maverick (trymaverick.com)
· Original study ↗
Methodology
Vendor case study of AI email optimization (Optimizer) for a single brand
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
NuStrips (Klaviyo email flows): 19% email flow revenue growth rate. Source: Maverick (trymaverick.com) (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/nustrips-klaviyo-flow-revenue-increase
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<blockquote cite="https://lighthousedata.io/data/nustrips-klaviyo-flow-revenue-increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>19%</strong> -- email flow revenue growth rate for NuStrips (Klaviyo email flows)<br><small>Source: Maverick (trymaverick.com) (2026) · <a href="https://lighthousedata.io/data/nustrips-klaviyo-flow-revenue-increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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