VerifyMaill VerifyMaill

Clean entire email lists in minutes

Upload a CSV, get a clean list back. Remove invalid, risky and disposable addresses before you hit Send, and stop bounces before they damage your sender reputation.

Includes 250 free credits · No credit card required

99% Deliverability Encrypted & secure GDPR Compliant
58.5% Deliverable
Deliverable
3,802 58.5%
Undeliverable
728 11.2%
Risky
1,372 21.1%
Unknown
403 6.2%
Duplicate
195 3.0%

Trusted by 5,600+ Businesses Across 180+ Countries

01 · Import

Bring your list in from anywhere

Drag-and-drop a CSV, paste a column from a spreadsheet, or pull straight from your ESP, CRM or warehouse with 60+ native integrations.

  • Drag-and-drop CSV, XLSX, TXT (up to millions of rows per job)
  • 60+ integrations: Mailchimp, HubSpot, ActiveCampaign, Brevo, Salesforce, Klaviyo…
  • Copy-paste from any spreadsheet, or pipe in via the API
Browse integrations

Drop your list here

CSV, XLSX or TXT · up to 5,000,000 rows

or pull from
Mailchimp
HubSpot
Salesforce
Brevo
Klaviyo
+ 55 more
02 · Verify

Real-time results at industry-leading speed

No queues, no overnight waits. Watch your list verify live, with 99% accuracy and a deliverability guarantee to back it up.

  • 30,000+ emails per minute: 100k list done in under 3 minutes
  • Multi-stage pipeline: syntax → domain → MX → SMTP → reputation
  • Anti-greylisting engine resolves the 3% of addresses other tools mark Unknown

April Newsletter

76,482 emails · started 2 min ago

Verifying
Progress 68,217 / 76,482

39,910

Deliverable

14,401

Risky

7,640

Undeliverable

6,266

Unknown

~ 28 sec remaining Webhook on completion
03 · Analyze

See exactly what's in your list

A complete breakdown by state and reason. Drill into any individual result for the full verification trail.

  • Per-result: state, reason, score (0–100), SMTP provider, MX, role/disposable/free flags
  • Did-you-mean suggestions catch typos like gnail.com → gmail.com
  • Detailed dashboard reports and trends across lists over time

sarah@acme.com

Deliverable

Score

98 / 100

SMTP Provider

Google Workspace

MX Record

aspmx.l.google.com

Full Name

Sarah Chen

Role: no Disposable: no Free: no Accept-all: no No-reply: no
04 · Export

Get the clean list back where you need it

Download instantly, push back to the source integration, or build a custom export with exactly the columns and states you need.

  • One-click exports: CSV, XLSX, or back to your ESP/CRM
  • Filter by state, score, role, disposable, free, accept-all and more
  • Choose your own columns, including enriched fields like SMTP provider and full name

Export options

Choose which states to include

Deliverable 39,910
Risky 14,401
Undeliverable 7,640
Unknown 6,266
54,311 emails selected Export CSV

The strategic case for clean lists

A dirty list quietly costs you for months; bulk verification fixes that in one pass.

Protect domain reputation

Keep your sender score high so inboxes keep letting you in.

Stay off blacklists

Avoid the spam-folder spiral caused by sending to dead addresses.

Keep your list clean

Hard-bounce-free lists power healthy long-term campaign performance.

Reduce bounce rates

Strip invalid emails before they tank your delivery metrics.

Improve deliverability

Be confident your messages are actually seen by real people.

Get realistic metrics

Open and click rates that reflect engagement, not garbage data.

Improve engagement

Send only to deliverable addresses to drive real responses.

Eliminate bad signups

Remove fake, misspelled and non-existent emails from any source.

Save time and money

Stop paying ESP credits to email contacts that don't exist.

Frequently asked questions

What is bulk email verification?
Bulk email verification checks every address in a list to confirm it exists, accepts mail, and is safe to send to. Each address is categorized as Deliverable, Risky, Undeliverable, or Unknown based on syntax, domain, MX and SMTP checks.
How accurate is VerifyMaill's bulk verifier?
We guarantee 99% deliverability: no more than 1% of addresses marked Deliverable will bounce on send. Our multi-stage pipeline catches what single-pass checkers miss: catch-alls, role accounts, disposables, typos and authenticated mailboxes that still reject mail.
How fast is it?
VerifyMaill processes 30,000+ emails per minute. A 100k list typically clears in under 3 minutes; lists of 250k clear in around 10 minutes. You'll get a webhook when it's done so you don't have to babysit the job.
How much does bulk verification cost?
Bulk verification uses the same per-email credits as the rest of the platform: $4 per 1,000 emails, with 250 credits free every month. You only pay for usable results: unknowns are never charged.
Does VerifyMaill actually send emails during verification?
No. Verification is non-invasive: we negotiate with the receiving mail server up to the point where it confirms the address, then disconnect. Recipients are never contacted.
How is greylisting handled?
Greylisting affects roughly 3% of addresses. Our anti-greylisting engine automatically backs off and retries at the right intervals, so those addresses still resolve as Deliverable rather than getting stuck as Unknown.
Is my data secure?
Yes. VerifyMaill is GDPR compliant and follows industry best practices. All data is encrypted in transit (TLS) and at rest (AES-256), and lists are auto-deleted 30 days after verification. You can also delete them manually at any time.
How often should I re-verify a list?
Email lists decay by about 3% per month. A quarterly re-verification is a sensible minimum; teams sending weekly typically re-verify monthly to keep deliverability metrics consistent.

Hit Send with a list you can trust

Upload a CSV, get a clean list back in minutes. 250 credits free every month, no credit card required.

Includes 250 free credits · No credit card required