B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
21%
21% -- click through rate lift for email CTA buttons (2025)
Changing the color of an email CTA button can increase click-through rates by as much as 21%.
- Represents an upper bound ('as much as 21%')
- Specific example cited is switching button color from blue to red
Attribution:
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Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
21%
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
Email Marketing Daily
Primary
Tier C
https://nureply.com/blog/ab-email-testing-improve-your-email-campaign-results-with-these-tips/ ↗
Source Article
A/B Email Testing: Improve Your Email Campaign Results with These Tips.
A/B Email Testing: Improve Your Email Campaign Results with These Tips.
Quick Answer
Email marketing remains one of the most effective ways to connect with customers, but not all emails hit the mark. Have you ever wondered why some email campaigns soar while others flop? The answer often lies in A/B…
Original Research
Email Marketing Daily
· Original study ↗
Methodology
Attributed to Email Marketing Daily study on CTA button color changes
Methodology documented
Segmentation
Industrymarketing
RoleAll marketers
Channelemail
Cite this stat
Plain Text
email CTA buttons: 21% click through rate lift. Source: Email Marketing Daily (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/cta-button-color-ctr-lift-21
HTML Embed
<blockquote cite="https://lighthousedata.io/data/cta-button-color-ctr-lift-21" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>21%</strong> -- click through rate lift for email CTA buttons<br><small>Source: Email Marketing Daily (2025) · <a href="https://lighthousedata.io/data/cta-button-color-ctr-lift-21" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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