Extension Tracker

DMarcus — dmarc.mx Email Security Checker

No user count No ratings yet Last updated 19 May 2026

By Schmug Live in the Chrome Web Store odoepcjbdoomjpkkifcfampdiohmkicc Last checked 27 Sep 2026, 06:43 UTC

The listing

What the Chrome Web Store shows, as of the last check

Check any domain's email security (DMARC, SPF, DKIM, BIMI, MX, MTA-STS) client-side via DNS-over-HTTPS. No server, no tracking.Summary from the listing
Developer
Schmug
Category
Productivity › Developer Tools
First published
19 May 2026
Last updated
19 May 2026
Version
0.1.0
Size
69.1 KiB
Minimum Chrome
88
Languages
1 language

English

Website
dmarc.mx
Support page
https://github.com/schmug/DMarcus
Open in the Chrome Web Store ↗ View the code or download the CRX in CRX Peek ↗
Users over time As shown on the Chrome Web Store

Tracking began on 27 Sep 2026. The chart appears after the second check.

Show the numbers
CheckedUsersRatingRatings
2026-09-27–––
Users, 7 days
–
needs a week of history
Users, 30 days
–
needs a month of history
Rank
–
by users, of 264,699 extensions
In its category
–
of 27,615 in Developer Tools

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

What it can access

From the extension's manifest, in plain language

Every websiteIt can read and change your data on all the sites you visit.
Sites
  • https://*/.well-known/mta-sts.txtEvery website
  • https://*/.well-known/security.txtEvery website
  • https://*/security.txtEvery website
  • https://cloudflare-dns.com/*cloudflare-dns.com
  • https://dns.google/*dns.google
Browser features
  • activeTabThe tab you're on, only after you click the extension
  • contextMenusAdd items to the right-click menu
  • storageSave settings and data in your browser
  • tabsRead the addresses and titles of your tabs

More from this developer

Other extensions from the same publisher account

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YouTube RSS Extractor20 –– Developer Tools
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All 3 extensions by Schmug →

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 27 Sep 2026, 06:43 UTC; next check around 22 Oct 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “DMarcus — dmarc.mx Email Security Checker” (odoepcjbdoomjpkkifcfampdiohmkicc). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/odoepcjbdoomjpkkifcfampdiohmkicc. Accessed 2026-09-28.
BibTeX
@misc{extensiontracker_odoepcjbdoomjpkkifcfampdiohmkicc,
  title   = {DMarcus — dmarc.mx Email Security Checker (odoepcjbdoomjpkkifcfampdiohmkicc)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/odoepcjbdoomjpkkifcfampdiohmkicc},
  urldate = {2026-09-28}
}

The data is free to reuse under CC BY 4.0.

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