B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
13.6%
13.6% -- share of domains including google workspace spf for Google Workspace (2026)
13.6% of domains include Google Workspace in their SPF record, making it the #2 SPF include.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
13.6%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
5,499,028
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
DMARCguard
Primary
Tier A
https://dmarcguard.io/blog/spf-permerror-fix/ ↗
Source Article
SPF PermError: How to Find and Fix It (2026 Guide) | DMARCguard
SPF PermError: What Causes It and How to Fix It Step-by-Step
In our SPF Supply Chain Study, we scanned 5,499,028 domains and found 148,655 with SPF configurations that exceed the 10-lookup limit — the most common trigger for SPF PermError. If your emails are silently failing authentication, an inval…
Original Research
DMARCguard
· Original study ↗
Methodology
DMARCguard SPF Supply Chain Study
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google Workspace: 13.6% share of domains including google workspace spf. Source: DMARCguard (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/google-workspace-spf-include-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/google-workspace-spf-include-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>13.6%</strong> -- share of domains including google workspace spf for Google Workspace<br><small>Source: DMARCguard (2026) · <a href="https://lighthousedata.io/data/google-workspace-spf-include-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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