Developer
Email Validator
Validate email addresses for correct syntax and domain verification.
What email validation actually checks
Most validators check a syntactic pattern: there is a local part, an @ sign, and a recognizable domain. That catches obvious typos such as missing the @ symbol, double dots, or incomplete addresses. It does not prove a mailbox exists, is currently active, or belongs to the person you expect — only a delivery attempt or confirmation email can verify that.
Use the tool
Common email format mistakes this tool catches
Typical errors include missing or misplaced @ signs, spaces in the address, invalid characters in the local part, missing top-level domains (example: user@domain with no .com), and double dots before or after the @ sign. Catching these before submission improves form UX and reduces bounce rates in email campaigns.
How to use validation alongside good UX
In web forms, pair syntax validation with helpful inline hints — for example, suggesting ".com" when a user types ".ocm" or ".con". Provide a specific error message like "Email address is missing the @ symbol" rather than a generic "invalid email" label. If you are building a sign-up flow, also offer a confirmation email step, since correct syntax does not equal a real inbox.
What this tool is not
This tool does not check MX records, SMTP deliverability, inbox reputation, or whether an address belongs to a real person. It is a quick syntax helper for developers and form designers. For bulk email list cleaning or deliverability scoring, a dedicated email verification service is the appropriate choice.