Tools · API Docs · Pricing · Privacy · Get a key
Last updated: July 2, 2026.
The free tools and the API process the values you submit (an email address, phone number, card number, or text) only to compute and return a result. These inputs are handled in memory and are not stored, logged, or sold. Results are returned to you and then discarded.
The free tools require no signup. This site does not use advertising cookies or third-party analytics trackers.
To estimate email deliverability, only the domain part of an address is sent to Cloudflare DNS-over-HTTPS (1.1.1.1) to look up public MX records. Full addresses are not stored.
If you email us (for example to request an API key), we receive your email address and message solely to respond. We do not sell or share this information.
The site and APIs run on Cloudflare Workers and are served over HTTPS.
Questions about this policy: cchkjjdobby@gmail.com