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Home/Developer Tools/Email Validator
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Email Validator

Validate email addresses instantly. Check syntax, deliverability, and common typos.

Paste single or multiple emails (comma-separated, line-separated, or space-separated)

How it Works

  • Syntax Validation: Checks RFC 5322 email format compliance
  • Domain Validation: Verifies domain structure and TLD validity
  • Typo Detection: Identifies common mistakes (gmail.con, etc.)
  • Disposable Check: Flags temporary email services
  • Suspicious Patterns: Alerts on unusual email characteristics

Note: This tool validates format and syntax. For complete deliverability checking, send a verification email.

About Email Validator

Free email validator that checks whether email addresses are valid, properly formatted, and potentially deliverable. Paste single emails or bulk upload a list to validate multiple addresses at once. The tool checks for RFC 5322 syntax compliance, detects common typos (gmail.con instead of gmail.com), identifies disposable email providers, checks for DNS MX records (mail server validation), and flags suspicious patterns. See real-time validation results with visual indicators and detailed reports showing valid, invalid, and suspicious emails. Download results as CSV. Perfect for sign-up form validation, email list cleaning, marketing campaign preparation, preventing spam registrations, and ensuring data quality in your database. All validation happens in your browser using modern DNS checking capabilities - completely free and private.

Frequently Asked Questions

How does email validation work?
The tool performs multiple validation layers: (1) Syntax validation checks the email format against RFC 5322 standard (local part @ domain with valid characters), (2) Domain validation confirms the domain exists with proper MX records for mail delivery, (3) Typo detection flags common mistakes like gmail.con or yahho.com, and (4) Provider checks identify disposable or temporary email services.
What makes an email syntactically valid?
A valid email has three parts: a local part (before @) with alphanumerics, dots, hyphens, underscores (no spaces or special chars), the @ symbol, and a domain with valid TLDs. For example, john.doe@company.co.uk is valid. Invalid examples: john..doe@company.com (double dot), @company.com (no local part), john@.com (no domain), or john@company (no TLD).
Why do some valid emails get flagged as suspicious?
Emails may be flagged as suspicious if they use disposable email services (temp-mail.com, 10minutemail.com), have unusually high character counts, contain all numbers, use suspicious patterns, or have inconsistent domain reputation. These aren't necessarily invalid - they just suggest potential issues for sign-ups, form validation, or marketing lists.
Can this validator check if an inbox exists?
No. Email validation cannot definitively prove that a specific mailbox exists without attempting to send an email (which could be marked as spam). The tool checks if the domain accepts mail and has valid MX records. To truly verify deliverability, you need to send a verification email.
How do I validate multiple emails at once?
Use the bulk validation mode - paste a list of emails (comma-separated, space-separated, or one per line) or upload a CSV file. The tool will validate each email and generate a report showing valid, invalid, suspicious, and disposable addresses. Download the results as CSV for easy filtering.
Why does the validation show DNS MX record status?
MX (Mail Exchange) records tell email systems where to deliver mail for a domain. If a domain has valid MX records, it can receive emails. No MX records means the domain can't receive mail, making those emails undeliverable regardless of the syntax. This helps catch errors like domain typos (gmai.com vs gmail.com).
Is my data secure with this email validator?
Yes, completely secure. All validation happens in your browser using client-side JavaScript. Your email addresses are never sent to any server - they're validated locally. No data is logged, stored, or transmitted anywhere, making this tool safe for validating sensitive customer lists.
What's the difference between syntax and deliverability checking?
Syntax checking ensures the email format is correct (local@domain.ext). Deliverability checking verifies the domain exists, has mail servers (MX records), and can receive emails. An email can be syntactically perfect but undeliverable if the domain doesn't accept mail.

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