Sendmaster
Check your domain's outbound mail authentication (SPF, DKIM, DMARC) with inline validation and a copy-friendly summary.
As of June 2026, Sendmaster has 4 users in the Developer Tools category.
Usersno change0%
4
4
Ratingno change0%
—
— reviews
Reviewsno change0%
—
Version
0.1.0
Manifest V3
History
3 snapshotsTracking since May 25, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| May 25, 2026 | — | — | — | 0.1.0 |
| May 31, 2026 | — | — | — | 0.1.0 |
| Jun 7, 2026 | 3 | — | — | 0.1.0 |
| Now | 4 | — | — | 0.1.0 |
Permissions & access
- Permissions
- activeTabstorage
- Host access
- https://cloudflare-dns.com/*, https://dns.google/*
Screenshots
About
Sendmaster is a browser extension that displays SPF, DKIM, and DMARC DNS records for the website you are currently viewing to help you verify your configuration or help to spot potential issues. Misconfiguration of DNS records can lead to impersonation of your domain or your legitimate outbound email landing in junk folders by default. What the extension does: When you click the toolbar icon on a tab, the extension reads the hostname of that tab, derives the root domain, and queries DNS TXT and NS records for it. The results render inside the popup.
Technical
- Version
- 0.1.0
- Manifest
- V3
- Size
- 22.6KiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- mejihhkbmfoilibplfgdhlakpmjolacb
- Developer ID
- u61e1d04e8fff09b617ccf29a81320801
- Developer Email
- [email protected]
- Created
- May 24, 2026
- Last Updated (Store)
- May 25, 2026
- Last Scraped
- Jun 7, 2026
- Website
- —
- Support URL
- —
- Privacy Policy
- https://conditionalaccess.uk/sendmaster/
Data sourced from the Chrome Web Store · last verified Jun 7, 2026.