# Changelog of Email List Precheck: Syntax, MX & Disposable Check (`offerastudio/email-list-precheck`) Actor

- **URL**: https://apify.com/offerastudio/email-list-precheck/changelog.md
- **Full Actor documentation**: https://apify.com/offerastudio/email-list-precheck.md

## Changelog

### 1.0 (2026-10-07)

- First version.
- Pre-check of up to 100,000 addresses: syntax and normalisation (trim, lower-case domain, internationalised domains to punycode), MX records (or A/AAAA as implicit MX) over DNS-over-HTTPS cached per domain, disposable domains (open CC0 list bundled, refresh script included), role accounts, free webmail providers, typo suggestions for common providers and TLDs, duplicates.
- Verdicts without a key: invalid, risky, unknown. Never "valid", and no SMTP probing (outbound port 25 is closed on Apify).
- Optional exact verification through the user's own MillionVerifier or ZeroBounce key; the provider's raw status is kept.
- Pay per event: `email-prechecked` at $0.0002; `email-verified-byok` at $0.0005 when the provider answered. Duplicate and error rows are free.