Does validating an email address guarantee delivery?

No. Format and MX validation cannot guarantee delivery. An address can be syntactically valid with working MX records but still bounce if the specific mailbox doesn't exist. The only way to confirm deliverability is to send a test email.

What is a disposable email address?

Disposable (temporary) emails from services like Mailinator, Guerrilla Mail, and 10 Minute Mail are used to bypass registration requirements. The validator flags known disposable domain providers to help prevent fake signups.

What makes an email address technically valid?

A valid email has a local part (before @), an @ symbol, a domain with at least one dot, and a valid TLD. The local part allows letters, digits, and certain special characters. Quoted strings and IP address literals are technically valid but rarely used.

Home ToolsEmail Validator

Email Validator

Name: Email Validator
Rating: 4.8 (120 reviews)
Author: DailyDevTools

Validate email format and detect typos

Email Address

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What is Email Validator?

Email validation ensures addresses are correctly formatted and deliverable before sending campaigns, completing registrations, or importing contact lists. DailyDevTools' Email Validator checks email format against RFC 5321/5322 rules, detects common typos (gogle.com, yahooo.com), identifies disposable email providers, and validates MX records — distinguishing between syntax validation and actual deliverability.

How to use Email Validator

1Enter an email address in the input field
2The tool instantly checks format validity: correct structure, valid TLD, no illegal characters
3View the MX record check to see if the domain can receive email
4Use Bulk Validate to paste a list of emails and get a valid/invalid breakdown

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Email Validator

What is Email Validator?

How to use Email Validator

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