B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
84%
84% -- email deliverability rate for Mailchimp (2025-2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
84%
Unit
Percentage
Data Vintage
2025-2026
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
EmailToolTester
Primary
Tier C
https://blog.automatedsalesmachine.com/mailchimp-vs-constant-contact/ ↗
Source Article
Mailchimp vs Constant Contact: 5 Brutal Honest Differences
The mailchimp vs constant contact debate has persisted for years — and for good reason. Both platforms dominate small-business email marketing, both carry recognizable names, and both promise to grow with your audience. The problem is how they define “growing with you”: through escalating per-contac…
Original Research
EmailToolTester
· Original study ↗
Methodology
Independent deliverability testing attributed to EmailToolTester; value reported as an approximation ('averaging around 84%') in controlled tests. Cited secondhand by vendor blog.
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2022 | 91.93% | |
| 2023 | 72.43% | -21.2% |
| 2025 | 89% | +22.9% |
| 2025-2026 (current) | 84% | -5.6% |
| 2026 | 95% | +13.1% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
Mailchimp: 84% email deliverability rate. Source: EmailToolTester (2025-2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/mailchimp-email-deliverability-rate-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/mailchimp-email-deliverability-rate-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>84%</strong> -- email deliverability rate for Mailchimp<br><small>Source: EmailToolTester (2025-2026) · <a href="https://lighthousedata.io/data/mailchimp-email-deliverability-rate-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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