Free tools for email deliverability and security. No signup, no tracking, nothing stored.
tanase.ai is built by Liviu Tanase, founder & CEO of ZeroBounce — the email validation company trusted by 650,000+ customers to keep their lists clean and their mail in the inbox.
These tools are the utilities he wished existed: fast, honest about their limits, and free. Each one does a single job well — grading your TLS, auditing your SPF, tracing a suspicious redirect — and tells you plainly what it can and can't prove.
Zero false positives. A deliverability tool that cries wolf is worse than no tool. Every check is conservative about what it claims.
Your data stays yours. Tools run in your browser or on Cloudflare's edge. Nothing you check is logged, sold, or used to train anything. See the privacy policy.
Honest limits. When a check can't be performed, the tool says so — it never presents "couldn't check" as "clean."
Questions, bug reports, or tool requests: ai@tanase.ai. Security issues: see security.txt.