B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
40%
40% -- engagement uplift for omnichannel outreach campaigns (2025)
Omnichannel outreach campaigns yield 40% higher engagement compared to single-channel outreach.
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Lighthouse Research Team
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Source verified
Evidence graded
Value
40%
Unit
Percentage
Data Vintage
2025
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Expandi
Primary
Tier C
https://outreachalmanac.com/guides/10-million-cold-emails-lessons/ ↗
Source Article
10 Million Cold Emails Later: The Comprehensive Cold Outreach Playbook | Outreach Almanac
What separates cold email practitioners who generate consistent pipeline from those who struggle in spam folders? After analyzing campaigns totaling over 10 million cold emails sent across dozens of clients, clear patterns emerge that define success in modern outbound.
This guide consolidates hard-w…
Original Research
Expandi
· Original study ↗
Methodology
Research cited from Expandi
Methodology documented
Segmentation
Industrymarketing
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omnichannel outreach campaigns: 40% engagement uplift. Source: Expandi (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/omnichannel-engagement-40-higher
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<blockquote cite="https://lighthousedata.io/data/omnichannel-engagement-40-higher" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- engagement uplift for omnichannel outreach campaigns<br><small>Source: Expandi (2025) · <a href="https://lighthousedata.io/data/omnichannel-engagement-40-higher" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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