Email Address Validator Guide

Quick answer

Use the Email Address Validator to check whether pasted email addresses look syntactically valid before importing a list or testing a form.

What this tool does

The tool checks address shape and helps separate obvious invalid entries. It does not prove mailbox ownership, deliverability, consent, or permission to contact.

Step-by-step use

1. Paste one or more email addresses.
2. Review valid and invalid entries.
3. Clean whitespace or duplicate lines if needed.
4. Copy the checked result.
5. Use a proper email system for deliverability and consent workflows.

Data handling and processing behavior

Processing is handled in the browser for this tool based on the current public implementation. Avoid pasting sensitive customer lists unless you have reviewed the implementation and your own data handling requirements.

Examples

Form QA

Check common invalid examples before testing validation messages.

List cleanup

Find obvious syntax issues before importing a small internal test list.

Assumptions and limits

• Syntax validation does not confirm the mailbox exists.
• It does not check DNS, MX records, bounce risk, or consent.
• Email lists can contain personal data and should be handled carefully.
• Business rules may reject addresses that are technically valid.

Review example

For form QA, prepare synthetic examples such as [email protected], [email protected], a missing-domain value, and a value with leading spaces. Keep consent and deliverability checks outside this syntax pass. If the list contains real users, use approved internal tooling instead of pasting customer data into a public page.

Common errors

Treating valid syntax as deliverability

An address can be well-formed and still bounce.

Pasting large private lists

Use approved internal tools for sensitive customer data.

Next steps

• Email Address Validator — check syntax
• Text Cleaner — normalize pasted lists
• CSV Cleaner — clean import rows