Tools
Growth signalNo paid features detectedMedium-risk permissions
Email Detective for Gmail: Identify ESPs & Check Authentication icon

Email Detective for Gmail: Identify ESPs & Check Authentication

See which ESP sent any email in Gmail. Detects 140+ providers and shows SPF/DKIM/DMARC authentication.

Users618Current public install base
Rating5.0Store average score
Reviews12Public review volume
Manifest versionV3Extension platform version
7-day growth+47Net users gained this week
7-day growth rate+8.23%Relative weekly velocity
Preview

Email Detective for Gmail: Identify ESPs & Check Authentication Media preview

5 assets
Trend

30-day user trend

Review user movement over the last 30 days.

User Growth Over Time

5645795946086232026年6月10日2026年6月12日2026年6月16日Latest: 618
Rating trend

30-day rating change

Track rating movement over time to see whether quality signals remain stable.

30-day rating change

Start
5.00
Latest
5.00
30-day rating change
0.00
4.904.955.005.055.102026年6月10日2026年6月12日2026年6月16日Latest: 5.00
2026年6月10日2026年6月16日
Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthGrowing
+1+0.16%
7-day growthGrowing
+47+8.23%
30-day growthDeclining
-382-38.2%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version1.1.0
ManifestV3
Size40.87KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

Ever wonder which email marketing tool a company uses? Email Detective tells you instantly.

Open any email in Gmail and see a "Sent via Mailchimp" (or Brevo, HubSpot, Klaviyo, etc.) badge right on the subject line. Click it for details: vendor website, authentication status (SPF, DKIM, DMARC), and a link to our independent review when available.

WHAT IT DETECTS:

-90+ email service providers across marketing platforms, newsletter tools, CRM systems, and transactional email services

-Detects Mailchimp, Brevo, HubSpot, Klaviyo and many more

-Infrastructure providers like SendGrid and Amazon SES, with smart detection that shows the actual marketing platform when possible

Reviews

Recent review snapshot

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The Chrome Web Store shows 12 reviews, but only 0 review bodies have synced into ExtScope so far. Showing the synced reviews available right now.

5★
0
4★
0
3★
0
2★
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1★
0
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