Free online email validator (isvalidemail style): check email address format in your browser—single addresses or one-per-line lists. Catch missing @, bad domains, and illegal characters before forms and CSV imports. No login; format only, no SMTP or Gmail existence checks.
It checks practical email format: presence of a single @, local-part and domain shape, length limits, illegal whitespace, and common typos like consecutive dots. Results show a normalized lowercase address when the format is acceptable. It is an isvalidemail-style syntax tool, not a deliverability suite.
No. Searches like checker gmail or “is this email real” often want SMTP or provider lookups. This page never contacts mail servers, never probes Gmail registration, and never batch-verifies live inboxes. That behavior is out of scope for privacy, abuse prevention, and our zero-cost model.
Yes. Paste one address per line and run Validate. The table lists each row with status, normalized form, and issue codes. Copy valid addresses as a clean newline-separated list for CSV cleanup or QA fixtures.
No. Validation runs entirely in your browser. Marketing lists, customer samples, and internal aliases stay on your device. Clear the page when finished on shared computers.
It follows a practical subset used by most web forms—not every exotic quoted local-part, comment, or IP-literal domain from the full RFCs. If you need absolute RFC compliance for a mail gateway, use a dedicated parser library in your stack after this quick filter.
Use Email Validator when you want opinionated email format rules and a readable issue list. Use Regex Tester when you are debugging a custom pattern for your own product. Many teams run both: validate samples here, then refine production regex elsewhere.
Yes. Free with no login required for the core format check path.