B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
23%
23% -- email engagement lift for businesses optimizing send times for their audience (2025)
Businesses that optimize send times for their specific audience see 23% better engagement than those using industry averages.
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Lighthouse Research Team
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Source verified
Evidence graded
Value
23%
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
60
Independence
30
Methodology
45
Freshness
95
Source
Mailchimp
Primary
Tier C
https://www.nextdropdesign.com/resources/why-are-my-email-open-rates-dropping-every-month ↗
Source Article
Email Open Rates Dropping? 7 Fixes to Boost Engagement | Next Drop
Your email list is growing, but your open rates keep declining. What used to generate 25-30% open rates now struggles to reach 20%, and you're wondering if email marketing is becoming less effective. The reality is that email marketing remains highly effective, but the strategies that worked in prev…
Original Research
Mailchimp
· Original study ↗
Methodology
Cited from MailChimp research
Methodology documented
Segmentation
Industrymarketing
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Plain Text
businesses optimizing send times for their audience: 23% email engagement lift. Source: Mailchimp (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/send-time-optimization-engagement
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<blockquote cite="https://lighthousedata.io/data/send-time-optimization-engagement" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>23%</strong> -- email engagement lift for businesses optimizing send times for their audience<br><small>Source: Mailchimp (2025) · <a href="https://lighthousedata.io/data/send-time-optimization-engagement" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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