Free Email Verifier
Verify your email addresses in seconds. Syntax, DNS, MX, disposable emails, free providers — everything is checked.
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Create a free accountEmail Verification: Why and How to Validate an Email Address
Email verification is the process of checking that an email address is valid, actually exists and can receive messages. It is an essential step for anyone sending newsletters, marketing emails or managing a contact database.
Why? Because sending emails to invalid addresses destroys your sender reputation. Providers like Gmail, Outlook and Yahoo monitor your bounce rate. If more than 2-3% of your emails bounce, your future sends risk landing directly in spam — even for valid addresses on your list.
Our email verification tool analyzes each address against 7 criteria: syntax (RFC format), common typos, disposable emails (Mailinator, Yopmail...), role addresses (info@, admin@), free vs. professional provider, domain existence (DNS) and mail server configuration (MX). All without sending a single email.
How to Perform a Quick and Reliable Email Check
An email check can be done in several ways, but not all offer the same level of reliability. Here are the different approaches:
Syntax Verification (basic)
Checks that the address follows the standard format: an identifier, an @, a domain with extension. Detects obvious errors like spaces, forbidden characters or a missing period in the domain. Necessary but insufficient on its own.
DNS and MX Verification (recommended)
Verifies that the domain exists (DNS record) and is configured to receive emails (MX record). If a domain has no mail server, no address on that domain can receive messages. This is the verification level used by our tool.
SMTP Verification (advanced, risky)
Connects directly to the mail server to check if the exact address exists. More accurate in theory, but problematic in practice: Gmail and Outlook block these checks, IP blacklisting risk is high, and false positives are frequent. This is why we do not use it.
Our approach combines syntax, DNS and MX verification with disposable email detection and typo correction. It is the best trade-off between reliability and safety for your sending domain.
Email Validation: The Consequences of an Unverified List
Email validation is not a luxury — it is a necessity for anyone sending bulk emails. Here is what happens when you skip this step:
High Bounce Rate
Every email sent to an invalid address generates a "hard bounce". Beyond 2-3%, ISPs (Gmail, Yahoo, Outlook) penalize your entire domain.
IP / Domain Blacklist
Anti-spam services like Spamhaus or Barracuda can blacklist your IP or domain if your bounce rate is too high. Result: none of your emails get through.
Skewed Analytics
Disposable emails and invalid addresses inflate your list artificially. Your actual open rate is much lower than what you think.
After Verification
A clean list improves your deliverability, open rates and protects your sender reputation in the long run.
Email Identity Verification: Tell Real Contacts from Fake Ones
Beyond technical validity, email identity verification determines whether an address belongs to a real person or a fictitious account. Our tool helps you sort through your list with several indicators:
- Disposable emails detected — Addresses created on Mailinator, Yopmail, Guerrillamail and 500+ other temporary services are automatically flagged. These addresses expire in minutes and never correspond to real contacts.
- Role addresses identified — Emails like info@, admin@, support@, noreply@ are shared mailboxes, not individuals. They have very low engagement rates in newsletters.
- Free vs. professional provider — An @gmail.com or @yahoo.com email is a personal account. An @company.com email is professional. This distinction matters for B2B outreach.
- Typo correction — gmial.com, hotmal.com, yaho.com... Our tool detects 30+ common typos and suggests corrections. Recover valid contacts instead of losing them.
How to Verify an Email List in Bulk
Have a contact list to clean before sending a campaign? Here is how to use our bulk email verification tool:
Prepare Your List
Export your contacts from your email tool (Mailchimp, Brevo, Substack, Beehiiv...) in CSV or TXT format. One email per line is all you need.
Import and Run Verification
Switch to "Bulk" mode, paste your emails or import your CSV file. Click Verify. The tool processes up to 200 emails per request (5,000/day with a free account).
Analyze and Clean
Review the results table: score, status, DNS, MX, disposable emails. Download the CSV results and remove invalid and risky addresses from your list before your next send.
By cleaning your list before every campaign, you maintain a bounce rate below 1% and protect your sender reputation.