B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
90%
90% -- email deliverability rate for Constant Contact (2025-2026)
Constant Contact achieves a deliverability rate of 90%+ in controlled benchmark tests.
- Reported as 90%+ in independent controlled benchmarks (EmailToolTester).
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
90%
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
Reported as a lower bound (90%+) from independent controlled testing attributed to EmailToolTester benchmarks; exact point value not stated. Cited secondhand by vendor blog.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Constant Contact: 90% email deliverability rate. Source: EmailToolTester (2025-2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/constant-contact-email-deliverability-rate-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/constant-contact-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>90%</strong> -- email deliverability rate for Constant Contact<br><small>Source: EmailToolTester (2025-2026) · <a href="https://lighthousedata.io/data/constant-contact-email-deliverability-rate-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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