📧 BounceVerify - Real-Time SMTP Email Verifier & Deliverability Tester

A high-speed, enterprise-grade Apify Actor to verify email deliverability, validate mailboxes, detect spam traps, identify disposable addresses, and prevent bounce rates in cold email campaigns.

---

🚀 Why Use BounceVerify?

• ⚡ Zero-Login & Public: Verifies emails directly via DNS and RFC 5321 SMTP handshakes without requiring third-party API subscriptions.
• 🎯 Multi-Stage Verification Engine:
  1. Syntax Validation: RFC 5322 & RFC 5321 compliant regex and character checks.
  2. DNS MX Discovery: Resolves and prioritizes MX mail server records with fallback to A records.
  3. Direct SMTP Handshake: Connects to target mail exchanger, issues EHLO, MAIL FROM, and RCPT TO commands to check mailbox existence.
  4. Catch-All Detection: Automatically probes randomized addresses to identify catch-all domains.
  5. Disposable Domain Blacklist: Pre-loaded database of 1,500+ disposable/burner email services (Mailinator, TempMail, GuerrillaMail, etc.).
  6. Free Provider Flag: Flags consumer providers (Gmail, Outlook, Yahoo, Proton, etc.) vs corporate B2B domains.
  7. Role-Based Account Detection: Detects generic addresses (sales@, support@, admin@, billing@, etc.).
  8. SPF & DMARC Check: Verifies DNS authentication records.
• 💯 Deliverability Scoring: Returns a confidence score from 0 to 100 alongside statuses: VALID, INVALID, RISKY, DISPOSABLE, CATCH_ALL, UNKNOWN.

---

📥 Input Configuration

Parameter	Type	Default	Description
emails	Array	[...]	List of email addresses to verify.
rawText	String	""	Raw text block or CSV lines containing emails (auto-extracted).
checkSmtp	Boolean	true	Connect to target MX server and perform SMTP handshake.
checkCatchAll	Boolean	true	Send probe to detect catch-all mail servers.
timeoutSec	Number	7	Socket and DNS timeout per verification.
concurrency	Integer	5	Number of simultaneous verifications (1 - 20).

---

📤 Output Schema Sample

{
  "email": "support@github.com",
  "status": "VALID",
  "sub_status": "MAILBOX_EXISTS",
  "score": 98,
  "is_deliverable": true,
  "is_disposable": false,
  "is_free": false,
  "is_role_account": true,
  "is_catch_all": false,
  "domain": "github.com",
  "user": "support",
  "mx_records": [
    "aspmx.l.google.com",
    "alt1.aspmx.l.google.com"
  ],
  "primary_mx": "aspmx.l.google.com",
  "smtp_connected": true,
  "smtp_response_code": 250,
  "has_spf": true,
  "has_dmarc": true,
  "duration_ms": 142.5
}