Skip to main content
Back to all tools
List hygiene Up to 500 emails · privacy by design · hashed at entry

Email List Cleaner

Catch dead, disposable, role-based, and typo'd addresses before you hit send. Each email runs through 12 syntax rules, a 9,200+ disposable-domain list, common typo correction, role-address detection, and test-pattern filtering. Every address is hashed the moment it reaches our server - we never store it in plaintext.

How we grade
75-100Valid / Deliverable
35-69Risky · review
0Undeliverable
Try a sample ·
e$
+The five checks

Twelve syntax rules.
Five categories. One score.

/ 01 - Syntax
Twelve rules
RFC 5322 syntax: single @, valid local part (≤64 chars), no leading/trailing dots, no consecutive dots, valid TLD, total ≤254 chars.
/ 02 - Disposable
200+ throwaways
Mailinator, GuerrillaMail, 10minutemail, YopMail, TempMail, and 200+ more known disposable providers.
/ 03 - Typos
Common misspellings
Detects gmial.com, yhoo.com, hotmial.com, outlok.com, redifmail.com, and 30+ other common domain typos.
/ 04 - Role addresses
System & role
noreply@, postmaster@, info@, support@, sales@. Configurable: warn, fail, or ignore.
/ 05 - Free providers
B2B filter
Flags gmail, yahoo, hotmail, outlook for B2B campaigns. Configurable to warn or remove from clean export.
/ 06 - Test patterns
Test & placeholder
test@, demo@, sample@, qa@, dev@, sandbox@. Flagged or removed depending on your filter mode.
+Privacy is the product

Every email hashed at entry.
Your list stays yours.

HMAC-SHA256 keyed hash computed before any database write. The cleaned list is returned to your browser; the originals never enter our servers.