Mail Checker
Krantz Mail
High-performance mail validation. IMAP, POP3, SMTP, Outlook, ABV.bg, GMX — auto-detects servers, handles proxies, scales to millions.
Get StartedAll Protocols
IMAP, POP3, SMTP, Outlook OAuth2, ABV.bg, GMX. Auto-detects the right server for each domain.
Native Speed
Real multi-threading with async I/O. No interpreter overhead, no VM, pure native speed.
Proxy Support
SOCKS4, SOCKS5, HTTP with rotation and authentication. Full control over your traffic.
Email Viewer
Read emails, browse folders, grab attachments. No need for separate tools.
Country Sorting
Auto-categorizes results by country based on email domain. 65+ providers mapped, TLD detection for the rest.
Profile & Cookies
Extract phone, country, and recovery data from Microsoft accounts. Export session cookies in Netscape format.
