Validate Email Addresses Instantly (Format, DNS & MX Check)
Validate email address format and check DNS/MX records. Detect typos in common email providers and verify domain deliverability. Free, instant, and secure.
How to Use Email Validator
How to Use Email Validator
Step 1: Enter Email Address
Type or paste an email address into the input field. Format validation happens instantly as you type.
Step 2: View Format Validation
The tool checks multiple aspects of your email:
- Format - RFC-compliant email structure
- Local Part - Username before @ (max 64 chars, valid characters)
- Domain - Domain structure and labels
- TLD - Top-level domain recognition
- Typo Detection - Common misspellings of popular providers
Step 3: Check DNS/MX Records
Click "Check DNS/MX" to verify if the domain:
- Has MX (Mail Exchange) records configured
- Can actually receive emails
- Exists in DNS
Validation Score
- 90-100: Excellent - Valid format with verified DNS
- 75-89: Good - Valid format, DNS unverified
- 50-74: Fair - Minor issues detected
- Below 50: Poor - Significant problems found
Use Cases
- Validate user-submitted emails in forms
- Check for typos before sending important emails
- Verify deliverability of email addresses
- Clean email lists for marketing campaigns
- Debug email delivery issues
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