B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
1,350
1,350 -- spam complaint reduction for dedicated SMTP servers (vs shared SMTP) (2025)
Switching from shared SMTP to dedicated SMTP servers reduced spam complaints by 1,350 instances over a six-month monitoring period of 45,000 emails.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
1,350
Unit
Count
Data Vintage
2025
Entity
Sample Size
45,000
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Labnify
Primary
Tier B
https://labnify.com/blog/lessons-from-monitoring-45000-emails-where-dedicated-smtp-reduced-spam-comp… ↗
Source Article
Lessons from monitoring 45000 emails where dedicated SMTP reduced spam
Your emails are disappearing into spam folders, and you’re losing potential customers every single day. After monitoring over 45,000 emails across multiple campaigns, I discovered something that completely changed how I think about email delivery – and the results were staggering.
When we switched t…
Original Research
Labnify
· Original study ↗
Methodology
Vendor first-party monitoring of 45,000 emails over six months, split between shared and dedicated SMTP services
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
dedicated SMTP servers (vs shared SMTP): 1,350 spam complaint reduction. Source: Labnify (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dedicated-smtp-spam-complaint-reduction-1350
HTML Embed
<blockquote cite="https://lighthousedata.io/data/dedicated-smtp-spam-complaint-reduction-1350" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>1,350</strong> -- spam complaint reduction for dedicated SMTP servers (vs shared SMTP)<br><small>Source: Labnify (2025) · <a href="https://lighthousedata.io/data/dedicated-smtp-spam-complaint-reduction-1350" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.