What This Email Validator Checks
- Format — is it a syntactically valid email address?
- Mail servers (MX records) — does the domain actually have mail servers configured to receive email?
- Disposable / temporary providers — is the domain a known throwaway-email service?
- Role accounts — is it a department address like
info@orsupport@rather than a person? - Common typos — did you mean
gmail.cominstead of a near-miss spelling? Fix them all with one click. - Duplicates — the same address twice, optionally including Gmail dot and
+tagvariants. - SPF & DMARC — is the domain set up properly to send and receive email?
- Free providers — Gmail, Yahoo, Outlook and others, which you can treat as risky for business lists.
Cleaning a List of Up to 100,000 Addresses
Paste your list or upload a CSV or TXT file; addresses are picked out of any text, so a raw export works. Each domain is looked up only once, so large lists finish quickly. Free accounts check 1,000 addresses per check; paid plans check up to 100,000 at once with faster lookups. Filter the results by status, search them, and download just the valid addresses, valid plus risky, or a full CSV report with the reason for every address.
Why Validate Emails Before Sending
Sending to invalid or non-existent addresses hurts your sender reputation and increases your bounce rate, which email providers use to decide whether your future emails land in the inbox or the spam folder. Checking a list before importing it into a mailing list, CRM or signup flow catches typos and dead addresses before they cost you deliverability.