Deep email verify. Supports: Gmail, Mail.Ru, iCloud, Hotmail, Yahoo, Outlook, Rambler, Yandex and more.

7 levels of verification:

1. By RFC standards.
2. By service email (no-reply@, no-spam@, …).
3. MX records exist.
4. By disposable/temporary email service.
5. By spam catchers (like abusix.com network members).
6. Connects to email service via standard protocol (SMTP) to check account exists.
7. Connects to email service via internal api to check account banned or blocked (supports: Gmail, Mail.Ru, iCloud, Hotmail, Yahoo, Outlook, Rambler, Yandex and more).