Best Practices
Handling Validation Errors
Best practices for handling validation errors in your application
nofakemails Team
1/16/2026
Error HandlingAPI
Handling Validation Errors
Learn how to properly handle errors when validating emails.
Error Types
nofakemails API returns different error types:
- 400 Bad Request: Invalid email format
- 401 Unauthorized: Invalid or missing API key
- 429 Too Many Requests: Rate limit exceeded
- 500 Internal Server Error: Server error
Example Error Handler
try { const result = await validateEmail(email) } catch (error) { if (error.status === 429) { // Handle rate limiting console.log('Rate limit exceeded, please try again later') } else if (error.status === 400) { // Handle invalid email console.log('Invalid email format') } else { // Handle other errors console.log('Validation failed') } }