B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
66%
66% -- share of course sellers ranking email as top customer source for course sellers earning $10K-$20K (2026)
According to a Teachable survey, 66% of course sellers who earned between $10K and $20K in the past 12 months cited email as their primary source of customers.
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Lighthouse Research Team
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Evidence graded
Value
66%
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
60
Independence
30
Methodology
45
Freshness
95
Source
Teachable
Primary
Tier C
https://www.learningrevolution.net/email-marketing-platforms/ ↗
Source Article
11 Best Email Marketing Platforms For Creators & Small Businesses (2026)
TL;DR: Best Email Marketing Platforms for Creators (2026)
An email marketing platform helps creators and course sellers grow their audience, build relationships, and sell digital products through automated email campaigns.
It’s your 24/7 marketing assistant for capturing leads, sending personalized …
Original Research
Teachable
· Original study ↗
Methodology
Survey by Teachable
Methodology documented
Segmentation
Industrymarketing
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Plain Text
course sellers earning $10K-$20K: 66% share of course sellers ranking email as top customer source. Source: Teachable (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/teachable-course-sellers-email-top-customer-source
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<blockquote cite="https://lighthousedata.io/data/teachable-course-sellers-email-top-customer-source" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>66%</strong> -- share of course sellers ranking email as top customer source for course sellers earning $10K-$20K<br><small>Source: Teachable (2026) · <a href="https://lighthousedata.io/data/teachable-course-sellers-email-top-customer-source" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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