B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
2.69%
2.69% -- email bounce rate median for Mailchimp Transactional (formerly Mandrill) transactional emails (2018-2026)
Mailchimp Transactional has maintained a median bounce rate of 2.69% since 2018 across more than 300 billion emails delivered.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
2.69%
Unit
Percentage
Data Vintage
2018-2026
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Mailchimp
Primary
Tier A
https://mandrill.com/features ↗
Source Article
Transactional Email and Transactional SMS: Keep Customers Notified | Mailchimp
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Original Research
Mailchimp
· Original study ↗
Methodology
Median bounce rate maintained since 2018 while delivering over 300 billion emails
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Mailchimp Transactional (formerly Mandrill) transactional emails: 2.69% email bounce rate median. Source: Mailchimp (2018-2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/mailchimp-transactional-median-bounce-rate
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<blockquote cite="https://lighthousedata.io/data/mailchimp-transactional-median-bounce-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>2.69%</strong> -- email bounce rate median for Mailchimp Transactional (formerly Mandrill) transactional emails<br><small>Source: Mailchimp (2018-2026) · <a href="https://lighthousedata.io/data/mailchimp-transactional-median-bounce-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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