B
Evidence Grade B
Graded
under review
Safe to Cite
Current
0.1%
0.1% -- spam complaint rate for Email sender (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
0.1%
Unit
Percentage
Data Vintage
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
TrulyInbox
Primary
Tier A
https://www.trulyinbox.com/blog/improve-email-reputation/ ↗
Source Article
How to Improve Email Reputation?
You can write the best cold email in the world—and still end up in spam.
The problem is neither your email copy nor your offer: it’s your email reputation that’s working against you!
So, if your open rates are dropping or replies are slowing down, and you can’t pinpoint the problem, you’ve come to t…
Original Research
TrulyInbox
· Original study ↗
Methodology
Ideal spam complaint rate suggested by the author.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Email sender: 0.1% spam complaint rate. Source: TrulyInbox (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ideal-spam-complaint-rate
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ideal-spam-complaint-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>0.1%</strong> -- spam complaint rate for Email sender<br><small>Source: TrulyInbox (2026) · <a href="https://lighthousedata.io/data/ideal-spam-complaint-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Related Statistics
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.