B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
2.34%
2.34% -- share of emails containing word free for marketing emails (2022)
Only 2.34% of marketing email subject lines contain the word 'free'.
Attribution:
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Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
2.34%
Unit
Percentage
Data Vintage
2022
Entity
Sample Size
100,000
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
SendCheckIt
Primary
Tier B
https://sendcheckit.com/email-subject-line-tester-results ↗
Source Article
Results for Subject Line: '200,000 Customer Conversations Later'
Compare it to 100,000+ other emails sent by marketers like you.
-
B90 Points
You may be able to improve with some tweaks.
-
Scannability
5/10Has a scannability higher than 5
A measure of how easy-breezy it is to read your subject line. Don't shy away from using well known industry specific terms, ju…
Original Research
SendCheckIt
· Original study ↗
Methodology
SendCheckIt dataset of 100,000+ marketing emails
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
marketing emails: 2.34% share of emails containing word free. Source: SendCheckIt (2022). Via Lighthouse Intelligence -- https://lighthousedata.io/data/emails-containing-word-free
HTML Embed
<blockquote cite="https://lighthousedata.io/data/emails-containing-word-free" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>2.34%</strong> -- share of emails containing word free for marketing emails<br><small>Source: SendCheckIt (2022) · <a href="https://lighthousedata.io/data/emails-containing-word-free" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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