B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
88%
88% -- share of email senders unable to define delivery rate for email senders (2025)
Nearly 88% of email senders cannot correctly define what email delivery rate measures, according to Mailgun's 2025 report.
- The text states 'Nearly 88%'
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
88%
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
75
Source Trust
60
Citation Chain
60
Independence
30
Methodology
45
Freshness
95
Source
Mailgun
Primary
Tier B
https://e-warmup.com/blog/how-to-improve-email-deliverability-guide/ ↗
Source Article
How to Improve Email Deliverability Without Hurting Sender Reputation (2026 Guide)
Table of Contents
Nearly 88% of email senders cannot correctly define what “email delivery rate” even measures, according to Mailgun’s State of Email Deliverability 2025 report.
And yet, those same people are using it as their primary benchmark for campaign success. That’s a bit like a pilot checkin…
Original Research
Mailgun
· Original study ↗
Methodology
Cited from Mailgun's State of Email Deliverability 2025 report
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
email senders: 88% share of email senders unable to define delivery rate. Source: Mailgun (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/email-senders-cannot-define-delivery-rate-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/email-senders-cannot-define-delivery-rate-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>88%</strong> -- share of email senders unable to define delivery rate for email senders<br><small>Source: Mailgun (2025) · <a href="https://lighthousedata.io/data/email-senders-cannot-define-delivery-rate-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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