Free Email Checker & Verification Add-on for Gmail™. Instantly validate email addresses (syntax, MX, disposable, catch-all) to improve deliverability and reduce bounces. Start for free.
Listing updated:October 2, 2025
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Overview
👉 Verify email addresses directly from Gmail™ with Email Checker & Verification.
This free add-on ensures your emails reach real people, protecting your campaigns against invalid, fake, or risky email addresses.

Why use Email Checker?

✅ Improve deliverability – reduce bounce rates and avoid spam traps.

✅ Save time & money – stop sending emails to invalid or disposable accounts.

✅ Protect sender reputation – keep your domain trusted by email providers.

How it works (multi-step verification):

Email Syntax Checker – validates if the email address is correctly formatted.

MX Record Checker – verifies DNS mail server records.

SMTP & Mailbox Existence Check – confirms if the mailbox really exists (without sending emails).

Free Email Provider Detection – identifies Gmail, Yahoo, Outlook, etc.

Disposable Email Scanner – blocks temporary emails (e.g., Mailinator).

Role-based Email Detection – finds addresses like admin@, support@, sales@.

Typo & Correction Suggestion – detects common errors (e.g., gamil.com → gmail.com).

Catch-all Domain Detection – identifies domains that accept all emails.

Start for free today with the Gmail™ Email Checker & Verification Add-on.
Optimize your email campaigns, improve deliverability, and protect your sender reputation effortlessly.
Additional information
PricingFree of charge trial
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Email Checker & Verification for Gmail™ will ask for the permissions shown below. Learn more
Email Checker & Verification for Gmail™ will need access to your Google account
This will allow Email Checker & Verification for Gmail™ to :
Run as a Gmail add-on
Connect to an external service
View your country, language, and timezone
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
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