C
Evidence Grade C
Graded
accuracy verified by the review judge
Use with Hedging
Dated
36.5%
36.5% -- average open rate for Constant Contact users (2023)
Constant Contact reported that the average open rate for its users was 36.5% in 2023.
- Open rates across the industry may be influenced or inflated by Apple Mail Privacy Protection (MPP) and bot activity.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
36.5%
Unit
Percentage
Data Vintage
2023
Entity
Evidence Quality
C
Moderate quality evidence
Useful directional data with some methodological gaps. Treat as indicative rather than definitive -- corroborate before citing in formal research.
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Sources (2)
Constant Contact
Primary
Tier B
https://inboxcollective.com/ways-to-measure-the-success-of-your-newsletter/ ↗
Source Article
25 Ways to Measure the Success of Your Newsletter
When I sit down with a prospective client, I typically ask two big questions. The first is one they always have an answer to: What do your metrics look like at this moment? In response, they usually share a few stats, often starting with open rate and list size.
But the second question is harder to …
Also cited by
2026-09-18
Original Research
Constant Contact
· Original study ↗
Methodology
2023 benchmark shared by Constant Contact (ESP) for average open rate across its user base; cited by Inbox Collective.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Suggested hedging: According to limited, single-source data, with unverified sample sizes...
Plain Text
Constant Contact users: 36.5% average open rate. Source: Constant Contact (2023). Via Lighthouse Intelligence -- https://lighthousedata.io/data/constant-contact-average-open-rate-2023
HTML Embed
<blockquote cite="https://lighthousedata.io/data/constant-contact-average-open-rate-2023" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>36.5%</strong> -- average open rate for Constant Contact users<br><small>Source: Constant Contact (2023) · <a href="https://lighthousedata.io/data/constant-contact-average-open-rate-2023" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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