Free Email Verifier & Bulk Email Checker
Verify whether an email address exists, is deliverable, and is safe to send in real time—or claim 1,000 free credits to upload bulk .CSV, Excel (.xlsx), or .TXT lists from 10,000 to 1,000,000+ rows.
Enter any email address to test live deliverability via MailVeri's verification engine
Need Bulk CSV, Excel (.xlsx), or TXT List Verification?
This free live tool checks individual addresses on-the-fly. Create an account to directly upload bulk .CSV, Excel (.xlsx, .xls), or .TXT files from 10,000 to 1,000,000+ emails without manual format conversion, view deep technical bounce diagnostics, or integrate our real-time REST and MCP APIs.
How Our Free Email Verifier & Bulk Checker Works
Unlike basic regex tools that only check for an @ symbol, MailVeri's free email verifier performs a real-time multi-step deliverability check—the exact same engine powering our bulk CSV verifier and REST/MCP APIs:
- RFC 5322 Syntax & Provider Normalization — Catches formatting errors, consecutive dots, and domain typos (like
gmial.com) while normalizing Gmail and ProtonMail aliases. - Disposable & Burner Domain Shield — Cross-references the domain and its MX servers against 100,000+ known temporary email providers to stop fake signups.
- Live DNS MX Resolution — Confirms the recipient domain publishes active Mail Exchange records capable of accepting inbound mail.
- Silent SMTP Mailbox Handshake — Connects to the destination mail server to verify whether the specific user mailbox exists, is disabled (
550 5.1.1/550 5.2.1), is over quota (FULL_INBOX), or operates as aCATCH_ALLdomain—without ever sending an email.
Single Email Checker vs. Free Bulk Email Verifier (1,000 Free Credits)
Use the interactive widget above to spot-check individual prospect or customer emails on the fly with zero registration. When you need to clean a spreadsheet or CRM export in bulk:
- 1,000 Free Bulk Verification Credits — Sign up for a free MailVeri account (no credit card required) to directly upload .CSV, Excel (.xlsx, .xls), or .TXT lists (up to 1,000,000+ rows per batch with zero manual conversion) and test bulk email verification for free.
- Detailed 7-Status CSV Exports — Segment your list into
VALID,CATCH_ALL,INVALID,DISPOSABLE,ROLE_ACCOUNT,FULL_INBOX, andUNKNOWN. - Up to 90% Lower Cost at Scale — Pay-as-you-go credits start at $9 for 10,000 emails, $59 for 100,000 emails, and $299 for 1,000,000 emails (down to $0.0002/check at 5M) with credits that never expire.
Need to verify more than one email?
Our free web tools are great for single quick checks. For cold outreach, email marketing, or database cleaning, use MailVeri Bulk.
| Feature | Free Single Email Checker | MailVeri Bulk Engine |
|---|---|---|
Syntax & Domain MX Check Detects typos & non-existent domains | ||
Deep SMTP Handshake Pings recipient mail server directly without sending email | ||
Catch-All & Disposable Detection Catches temporary mailboxes & risky accept-all domains | ||
Spam Trap & Honeypot Filtering Protects domain reputation from blacklists | ||
Processing Speed High-speed distributed verification queue | 1 email / lookup | 100,000 emails / ~30 mins |
Batch File Upload Auto-detects email columns with zero setup | Up to 1,000,000 rows (CSV, XLSX, TXT) | |
Trial & Expiration No credit card required | Manual lookups only | 1,000 Free Credits • Never expire |
Why Combine DNS Audits & Bulk Verification?
Fixing SPF, DKIM, DMARC, and MX records protects your outbound domain authentication, while scrubbing your recipient list removes dead mailboxes, catch-all risks, and spam traps that trigger hard bounces and ESP account suspensions.
Keep Hard Bounce Rates Below 2%
Google Workspace, Microsoft 365, and Yahoo enforce strict sender thresholds. Verifying cold outreach and newsletter lists—including isolating catch-all domains without paying $800/100K—keeps your hard bounce rate safely below 2% and protects your sender reputation.
Up to 90% Cheaper List Hygiene
Legacy email verification tools charge $400 to $649 per 100,000 credits. MailVeri delivers 99%+ accuracy starting at $0.0002 per email ($59 per 100K / $299 per 1M non-expiring credits)—see how our rates compare against MillionVerifier, ZeroBounce & NeverBounce, DeBounce, Reoon, and EmailListVerify.
Free Bulk Email Verifier & Checker FAQs
Read How Bulk Email Verification WorksHow can I use a free bulk email verifier to check a list of emails?
Use the live checker above to test single addresses for free without signing up, or register a free account (no credit card required) to claim 1,000 free bulk email verification credits for CSV uploads.
Where to find free email verification credits that never expire?
Every new MailVeri account includes 1,000 free Universal Credits upon signup. Both free trial credits and paid pay-as-you-go bundles never expire.
Does checking an email send a message to the recipient?
No. MailVeri checks syntax, resolves DNS MX records, and performs a silent SMTP handshake without sending an actual email, so the recipient is never notified.
How much does bulk email verification cost after 1,000 free credits?
Pay-as-you-go bundles cost $9 for 10K, $59 for 100K, and $299 for 1M credits (down to $0.0002/check at 5M) with non-expiring credits and 99%+ verification precision—see how we handle the 0.5% post-verification bounce floor and compare rates across 36 email verifiers.
Need full email verification?
Syntax checking is just the first step. MailVeri verifies that the mailbox actually exists and can receive emails.
Try Full Verification Free