B
Evidence Grade B
Graded
under review
Safe to Cite
Current
20%
20% -- email click through rate increase for Email drip campaigns (Mailchimp campaign) (2026)
Attribution:
View source
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.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Mailchimp
Primary
Tier C
https://nureply.com/blog/best-cold-email-subject-lines-for-b2b-marketers-to-boost-response-rates/ ↗
Source Article
Best Cold Email Subject Lines For B2B Marketers To Boost Response Rates
Best Cold Email Subject Lines For B2B Marketers To Boost Response Rates
Quick Answer
Crafting the perfect cold email subject line is one of the most crucial steps in B2B marketing. In crowded inboxes where decision-makers receive dozens of pitches daily, your subject line often determines whether yo…
Original Research
Mailchimp
· Original study ↗
Methodology
Vendor-highlighted campaign example; no methodology stated
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Email drip campaigns (Mailchimp campaign): 20% email click through rate increase. Source: Mailchimp (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/mailchimp-subject-line-ctr-boost-20
HTML Embed
<blockquote cite="https://lighthousedata.io/data/mailchimp-subject-line-ctr-boost-20" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>20%</strong> -- email click through rate increase for Email drip campaigns (Mailchimp campaign)<br><small>Source: Mailchimp (2026) · <a href="https://lighthousedata.io/data/mailchimp-subject-line-ctr-boost-20" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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