Afzu Verifyer

The Afzu Verifyer checks whether email addresses are valid and deliverable — including syntax validity, MX record verification, and optional catch-all detection. It’s useful for cleaning up lead lists, improving deliverability, and ensuring that outreach campaigns target real inboxes.

     

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Introduction

This actor takes a list of email addresses as input and runs a series of checks to confirm if they exist and can receive email. It performs standard email validation steps, including domain MX lookup and SMTP-level verification. As a result, you get a clean, structured list indicating which addresses are likely valid — ideal for lead-generation, CRM hygiene, or email marketing workflows.

Why It Matters

• Reduce bounce rates by validating emails before outreach
• Detect catch-all domains that accept all addresses
• Clean up large lead lists automatically
• Export verified contacts for CRM import or campaign use

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Features

Feature	Description
Syntax Validation	Checks if the email address format is correct.
Domain & MX Record Check	Verifies that the email domain has valid MX records.
SMTP Verification	Performs live SMTP check to see if the mailbox exists (if server allows).
Catch-All Detection	Flags domains that accept all emails, reducing false positives.
Bulk Processing	Validate multiple email addresses in one run.
Structured JSON Output	Results are returned in clean JSON for easy filtering or export.

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What Data This Verifier Returns

Field Name	Field Description
email	The email address being checked.
isValid	Whether the address passes syntax, domain and (if possible) SMTP checks.
domain	The domain part of the email address.
hasMxRecord	Whether the domain has valid MX records.
smtpCheck	Result of the SMTP check (if performed).
isCatchAll	Whether the domain appears to be a catch-all.

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Example Output

[
  {
    "email": "john.doe@example.com",
    "isValid": true,
    "domain": "example.com",
    "hasMxRecord": true,
    "smtpCheck": "success",
    "isCatchAll": false
  },
  {
    "email": "invalid-email@bad@domain",
    "isValid": false,
    "domain": "bad@domain",
    "hasMxRecord": false,
    "smtpCheck": null,
    "isCatchAll": null
  }
]

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Directory Structure Tree

afzu-verifyer/
├── src/
│   ├── index.js
│   ├── verifier/
│   │   ├── syntax_checker.js
│   │   ├── mx_checker.js
│   │   └── smtp_checker.js
│   ├── utils/
│   │   ├── email_parser.js
│   │   └── logger.js
│   └── config/
│       └── settings.example.json
├── package.json
└── README.md

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Use Cases

• Sales & marketing teams clean up email lists before outreach to reduce bounce rates.
• Lead generation pipelines validate contacts automatically for quality assurance.
• Freelancers & SMBs verify small batches of emails before contacting leads.
• CRMs & marketing tools integrate verification step into import workflows.

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FAQs

Does it verify deliverability for all emails?
It attempts SMTP-level checks when allowed by the recipient server. Some servers block SMTP probing, in which case verification relies on MX and domain checks.

Can it detect catch-all domains?
Yes — it flags domains that accept all email addresses to help avoid false positives.

What input format does the actor accept?
A JSON array of email addresses.

What output format does it give?
Structured JSON with validation results; easy to convert to CSV or integrate into existing data pipelines.

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