B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
35%
35% -- mailbox provider share of email database for FMCG brand in Barcelona (enterprise email database) (2026)
Hotmail accounted for 35% of the email database of a major FMCG brand in Barcelona during a reactivation campaign deliverability incident.
- Anecdotal case study shared in an interview without formal methodology stated
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Lighthouse Research Team
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Source verified
Evidence graded
Value
35%
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
20
Independence
30
Methodology
45
Freshness
95
Source
The Open Rate Club
Primary
Tier C
https://openrateclub.com/silent-deliverability-failures-that-cost-millions/ ↗
Source Article
Silent Deliverability Failures That Cost Millions
Florin Armasu, CEO and founder of Data Innovation and creator of the Sendability platform, has spent fifteen years fixing deliverability problems for enterprise clients including Nestle and Brown-Forman. In a conversation with Sophie Steffen for The Open Rate Club, he shared the kind of war stories …
Original Research
The Open Rate Club
· Original study ↗
Methodology
Case example shared by deliverability consultant Florin Armasu (Data Innovation/Sendability); Hotmail's share of the brand's email database at the time of a reactivation-campaign blocklist incident; no formal methodology stated
Methodology documented
Segmentation
Industrymarketing
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Plain Text
FMCG brand in Barcelona (enterprise email database): 35% mailbox provider share of email database. Source: The Open Rate Club (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/hotmail-share-of-fmcg-email-database-35
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<blockquote cite="https://lighthousedata.io/data/hotmail-share-of-fmcg-email-database-35" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>35%</strong> -- mailbox provider share of email database for FMCG brand in Barcelona (enterprise email database)<br><small>Source: The Open Rate Club (2026) · <a href="https://lighthousedata.io/data/hotmail-share-of-fmcg-email-database-35" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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