B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
26%
26% -- unsubscribe rate reduction for Email marketing (subject lines containing 'video') (2026)
Including the word 'video' in an email subject line reduces unsubscribe rates by 26%.
Attribution:
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Lighthouse Research Team
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Source verified
Evidence graded
Value
26%
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Campaign Monitor
Primary
Tier B
https://www.k3videoproduction.com/blog/types-of-marketing-videos/ ↗
Source Article
18 Types of Marketing Videos and How to Maximize Their Impact
Video is no longer just part of digital marketing. In 2026, it basically is digital marketing.
Consumers watch over 1 billion hours of YouTube every single day. Short-form video on TikTok, Instagram Reels, and YouTube Shorts continues to dominate how people discover brands, learn about products, and…
Original Research
Campaign Monitor
· Original study ↗
Methodology
Cited to Campaign Monitor; reduction in unsubscribe rates from including the word 'video' in email subject lines.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Email marketing (subject lines containing 'video'): 26% unsubscribe rate reduction. Source: Campaign Monitor (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/campaign-monitor-unsubscribe-reduction-26
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<blockquote cite="https://lighthousedata.io/data/campaign-monitor-unsubscribe-reduction-26" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>26%</strong> -- unsubscribe rate reduction for Email marketing (subject lines containing 'video')<br><small>Source: Campaign Monitor (2026) · <a href="https://lighthousedata.io/data/campaign-monitor-unsubscribe-reduction-26" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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