B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
35.72%
35.72% -- open rate lift from double opt in for double opt-in email lists (2025)
Double opt-in boosts email open rates by up to 35.72%.
- up to
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
35.72%
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
EmailToolTester
Primary
Tier C
https://mediusware.com/blog/email-list-management ↗
Source Article
Email List Management in 2025: Boost Deliverability & ROI with Smarter Hygiene
- Learn why poor email list hygiene silently destroys deliverability and ROI.
- Discover proven best practices for email list management in 2025: pruning, re-engagement, and KPIs.
- Explore top tools that automate cleaning, segmenting, and reputation protection.
Email List Management in 2025: Stop H…
Original Research
EmailToolTester
· Original study ↗
Methodology
Cited from EmailToolTester
Methodology documented
Segmentation
IndustryEmail Marketing
RoleAll marketers
Channelemail
Cite this stat
Plain Text
double opt-in email lists: 35.72% open rate lift from double opt in. Source: EmailToolTester (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/double-opt-in-open-rate-lift
HTML Embed
<blockquote cite="https://lighthousedata.io/data/double-opt-in-open-rate-lift" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>35.72%</strong> -- open rate lift from double opt in for double opt-in email lists<br><small>Source: EmailToolTester (2025) · <a href="https://lighthousedata.io/data/double-opt-in-open-rate-lift" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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