C
Evidence Grade C
Trusted with Context
Recent
80%
80% — email marketing roi for Single Opt In Programs (2025)
Source:
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Curated by Aaron Agius
· Founder, Louder Online
Last verified:
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Source verified
Evidence graded
Value
80%
Unit
Percentage
Data Vintage
2025
Entity
Study Type
Unknown
Trend
Stable
Evidence Quality
C
Moderate quality evidence
Useful directional data with some methodological gaps. Treat as indicative rather than definitive — corroborate before citing in formal research.
Score breakdown
Extraction
95
Source Trust
50
Citation Chain
90
Independence
30
Methodology
50
Freshness
80
Source
Litmus
Primary
Tier A
https://www.litmus.com/resources/email-marketing-roi ↗
Original Research
Litmus
· Original study ↗
Segmentation
RoleAll marketers
Channelemail
Cite this stat
Plain Text
Single Opt In Programs: 80% email marketing roi. Source: Litmus (2025). Via Lighthouse Research Data — https://lighthousedata.io/data/email-marketing-roi-single-opt-in-programs-2025
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<blockquote cite="https://lighthousedata.io/data/email-marketing-roi-single-opt-in-programs-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>80%</strong> — email marketing roi for Single Opt In Programs<br><small>Source: Litmus (2025) · <a href="https://lighthousedata.io/data/email-marketing-roi-single-opt-in-programs-2025" target="_blank" rel="noopener">Lighthouse Data</a></small></blockquote>
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