B
Evidence Grade B
Graded
under review
Safe to Cite
Current
20%
20% -- email list growth rate for customers using email appending (2026)
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
20%
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.
Score breakdown
Extraction
75
Source Trust
50
Citation Chain
90
Independence
30
Methodology
45
Freshness
86
Sources (3)
AtData
Primary
Tier B
https://atdata.com/blog/how-email-append-can-accelerate-your-email-marketing/ ↗
Source Article
How Email Append Can Accelerate Your Email Marketing | AtData
For organizations unaware of the value of email appending, adding missing email addresses to your existing customer records is a fast, easy way to boost sales and reduce costs.
On the flip side, sitting on records with gaps and holes could be costing you customers, leads, and revenues.
Email appendi…
Also cited by
forbes.com
https://www.forbes.com/
2026-08-16
designmodo.com
https://designmodo.com/
2026-08-16
Original Research
AtData
· Original study ↗
Methodology
Average growth rate from customers using email appending.
Segmentation
Channelrss_feed
Cite this stat
Plain Text
customers using email appending: 20% email list growth rate. Source: AtData (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/average-email-list-growth
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<blockquote cite="https://lighthousedata.io/data/average-email-list-growth" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>20%</strong> -- email list growth rate for customers using email appending<br><small>Source: AtData (2026) · <a href="https://lighthousedata.io/data/average-email-list-growth" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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