B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
3.7%
3.7% -- email campaign conversion rate for 'Buy one, get one free' email offer (split test, first 25% of email list) (2025)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
3.7%
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
MTHD Marketing
Primary
Tier A
https://mthdmarketing.com/50-off-or-bogof/ ↗
Source Article
Should you offer 50% off or ‘buy one, get one free’?
They’re mathematically identical, but this case study reveals buyer perception trumps numbers
Here’s a little math question. Imagine I have two different brands of whisky on sale. Identical liquid, amount, etc. Let’s pretend they taste the same, too.
One brand is $15, marked down from its original p…
Original Research
MTHD Marketing
· Original study ↗
Methodology
Flash-sale split test for an unnamed client clearing seasonal stock; 25% of the email list received the 'buy one, get one free' subject line (approx. 21,000 opens, over 2,000 clicks reported for this segment)
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
'Buy one, get one free' email offer (split test, first 25% of email list): 3.7% email campaign conversion rate. Source: MTHD Marketing (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/bogo-email-offer-conversion-rate
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<blockquote cite="https://lighthousedata.io/data/bogo-email-offer-conversion-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>3.7%</strong> -- email campaign conversion rate for 'Buy one, get one free' email offer (split test, first 25% of email list)<br><small>Source: MTHD Marketing (2025) · <a href="https://lighthousedata.io/data/bogo-email-offer-conversion-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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