Email Verifier
Verify any email address before you send
Check whether an address is valid and deliverable, and clean whole lists to reduce bounces and protect your sender reputation.
Layered checks
Built with extensive layers of verification
Each address is checked for availability and genuineness, step by step.
- Step 1
Database cross-check
We cross-check the address against our database of unique corporate email addresses.
- Step 2
Syntax
If it is not there, we check that the address is correctly formed.
- Step 3
MX records
Next we confirm the domain's MX records point to a mail server.
- Step 4
Mail server
Finally we ping the mail server to confirm the address can receive email.
What we check
How we verify emails
Domain & SMTP validation
We check with ISPs and remove addresses with invalid, inactive or parked domains, or invalid accounts.
Spam trap checker
Spam traps identify spammers, and you don't want to be one. We clean them out to improve your reputation score.
Disposable email cleaner
We identify short-lived, temporary addresses so your future emails reach their target.
Syntax validator
Removes addresses with invalid syntax. Use the API to notify your website users in real time.
Hard bounce checker
Undetectable verifications find out whether an address really exists and can receive messages.
MTA validator
Is there a mail server responsible for accepting messages? We run checks to validate MX records.
Accept-all checker
Flags catch-all domains, which report every address as valid, so you can keep a high-quality list.
Role email detection
Detects role-based addresses that are not for personal use and can hurt inbox deliverability.
Duplicate remover
Detects and removes duplicate emails so you don't spend credits on them before your next campaign.
Bulk Email Verifier
Bulk Email Verifier
Clean large, outdated lists quickly
- Upload CSV files with up to thousands of rows
- Export verified results as CSV
- Bulk tasks are included in the Pro plan
API
Built by developers, for developers
Use ColdLead anywhere with simple API calls to find and verify professional email addresses. Get started in minutes.
- Authenticate with a bearer API key
- JSON responses with deliverability status and reason
- Flags for accept-all, disposable, role and free addresses
curl -X GET "https://api.coldlead.io/v1/[email protected]" \
-H "Accept: application/json" \
-H "Authorization: Bearer {Your API Key}"
{
"data": {
"email": "[email protected]",
"username": "contact",
"domain": "coldlead.io",
"status": "deliverable",
"reason": "accepted_email",
"accept_all": false,
"disposable": false,
"role_address": true,
"free": true
}
}Why ColdLead
Send to real people, not bounces
Millions of contacts
Search through millions of records and pinpoint companies and contact information for key people.
Up-to-date data
We use live sources and update our data daily. No outdated databases.
Affordable
Get rid of spam traps, hard bounces, disposable and catch-all emails without breaking your budget.
Protect your domain reputation
Spam traps and hard bounces damage your sender reputation. Remove them to help keep your emails out of spam folders.
Save on email marketing
Improve sender reputation, deliverability and conversion by sending only to real people.
Better campaign ROI
Stop spending money on bad addresses. Send fewer emails, to a verified list.
Start finding verified emails today
Sign up and get 100 credits for free. No credit card required.