B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
41x
41x -- email marketing roi by frequency for Email marketing campaigns sending more than 9 emails per month (2026-04)
Sending more than 9 emails per month sees email marketing ROI drop to $41 for every $1 spent ($41:1).
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
41x
Unit
Ratio
Data Vintage
2026-04
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
AtlasPerk
Primary
Tier C
https://atlasperk.com/guides/crm-automation-for-travel/ ↗
Source Article
CRM for Travel — The Complete Automation Guide
Original Research
AtlasPerk
· Original study ↗
Methodology
Reported ROI decline for high-frequency sending (more than 9 emails per month)
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Email marketing campaigns sending more than 9 emails per month: 41x email marketing roi by frequency. Source: AtlasPerk (2026-04). Via Lighthouse Intelligence -- https://lighthousedata.io/data/email-roi-over-9-emails-month
HTML Embed
<blockquote cite="https://lighthousedata.io/data/email-roi-over-9-emails-month" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>41x</strong> -- email marketing roi by frequency for Email marketing campaigns sending more than 9 emails per month<br><small>Source: AtlasPerk (2026-04) · <a href="https://lighthousedata.io/data/email-roi-over-9-emails-month" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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