Check if an email address is valid and deliverable
Paste any email below to instantly verify syntax, MX records, SMTP status, and disposable detection. Free, unlimited single checks — no login required.
demo@fixaconfirm.com
How the free email verifier works
Three steps, under a second. Our engine runs every check in parallel so you get a comprehensive verdict instantly.
You enter an email
Paste any address into the field above. No special formatting needed.
We run 6 checks
Syntax, DNS, MX records, SMTP handshake, disposable detection, and catch-all flagging — all in parallel.
You get a verdict
Valid, Risky, or Invalid — with a 0–100 confidence score and individual check results.
What each verification check does
Every check serves a specific purpose. Here's exactly what FixaConfirm verifies and why it matters for deliverability.
Syntax Validation
Ensures the email address follows RFC 5322 formatting rules — catches typos, missing @, or malformed domains immediately.
Domain & DNS Lookup
Confirms the domain (e.g., gmail.com, yourcompany.io) is registered and has active DNS records.
MX Record Check
Mail Exchange records tell the internet where to deliver emails for a domain. No MX record = undeliverable, guaranteed.
SMTP Handshake
Our server connects to the recipient's mail server and asks if the mailbox exists — without sending an email. The most accurate check available.
Disposable Detection
Identifies addresses from 10,000+ known temporary email services (Mailinator, Guerrilla Mail, etc.) that signal fake signups.
Catch-All Detection
Flags domains set to accept any email, even for non-existent mailboxes. We surface this risk so you can set your own threshold.
Why you need to verify emails before sending
Email Service Providers (ESPs) like Mailchimp, SendGrid, and HubSpot track your hard bounce rate closely. When more than 2% of your emails bounce, your account triggers spam routing filters that affect your entire sending domain — not just a single campaign.
Verification before sending is the only way to guarantee a clean list. The damage from sending to an invalid or spam-trapped address is permanent — ISPs remember.
Frequently asked questions
Is this free email verifier really free?
Yes, completely free. No account or credit card required. You can verify individual email addresses as many times as you like using this tool.
What checks does the free verifier perform?
The tool runs 6 checks: syntax validation, domain/DNS lookup, MX record verification, SMTP handshake, disposable email detection, and catch-all domain flagging.
What is a catch-all email domain?
A catch-all domain accepts email sent to any address regardless of whether the mailbox exists. We flag catch-all domains so you can decide your own risk tolerance.
Can I verify a list of emails for free?
This tool is for single-email verification. For bulk lists, create a free account (50 verifications/month free) or get credits from €9 for 1,000 emails — they never expire.
Does verifying an email send anything to the recipient?
No. Our SMTP check performs a handshake with the receiving mail server without completing delivery or sending any content. The recipient will never know.