B
Evidence Grade B
Graded
under review
Safe to Cite
Current
14.3%
14.3% -- share of email senders operating in blind for Email senders (Yesware blog readers) (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
14.3%
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
Yesware
Primary
Tier B
https://www.yesware.com/blog/how-to-write-a-professional-email/ ↗
Source Article
Behind the Scenes: How To Write A Professional Email Fast
Original Research
Yesware
· Original study ↗
Methodology
Yesware survey of its own blog readers; 'operating in the blind' refers to sending email without tracking/insight into opens and engagement; sample size not stated and reader sample may be biased.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Email senders (Yesware blog readers): 14.3% share of email senders operating in blind. Source: Yesware (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/email-senders-operating-blind
HTML Embed
<blockquote cite="https://lighthousedata.io/data/email-senders-operating-blind" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>14.3%</strong> -- share of email senders operating in blind for Email senders (Yesware blog readers)<br><small>Source: Yesware (2026) · <a href="https://lighthousedata.io/data/email-senders-operating-blind" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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