Privacy policy
Last updated: 11 November 2026
The short version
Email Chekkr doesn't collect, store or share the email addresses you check. Checks run in your browser.
What happens when you check an address
- The address and any CSV file you choose are read by your browser only. They are not uploaded to Email Chekkr.
- To see if a domain receives email, your browser asks a public DNS-over-HTTPS service about the domain only — for example example.com, never jane@example.com. Email Chekkr uses Google Public DNS, with Cloudflare DNS as a backup. Their own privacy policies apply to those lookups.
- Results stay in your browser until you close the page or download them.
Contact and waitlist forms
When you send the contact or waitlist form, what you type (such as your name, email and message) is sent to us through Web3Forms, a form-delivery service, so we can reply. We use it only to answer you or to tell you when paid plans open. Ask us any time and we'll delete it.
Cookies and tracking
Email Chekkr doesn't use cookies, analytics or advertising trackers. Your light or dark theme choice is saved in your browser only.
Fonts
The site loads fonts from Google Fonts, which receives your IP address when the fonts download.
Hosting
The site is hosted on GitHub Pages, which may keep standard server logs (such as IP addresses) for security.
Changes
If this policy changes — for example when accounts or paid plans are added — the new version will be posted here with a new date.
Contact
Questions about privacy: contact us.