Email Verification Tool Built to Stop Bounces
Upload any list, however old, and get every address back marked keep, review or remove. You never pay for one we can't confirm.
No card needed, and there's nothing to install.
| m.bauer@t-online.de | Valid | Keep |
| info@westfield.io | Risky | Review |
| jorge@ardenbay.com | Catch-All | Segment |
| k.tanaka@corvane.com | Unknown | Re-run |
| rhale@fernmoor.com | Invalid | Remove |
Why bounces cost more than you think
Every bounce tells Gmail and Microsoft that you don't know who is on your list, and the penalty lands on your good emails too.
bounce rate is the danger zone
That's where deliverability guidance across the industry draws the line. Cross it and mailbox providers start quietly routing you to spam, so even your real contacts stop seeing you.
of a list goes stale each year
That's HubSpot's figure for natural list decay. People change jobs and abandon inboxes, so the list that performed last year is a bounce factory today.
to recover a burned domain
One bad campaign can wreck a domain's reputation, and rebuilding it takes weeks of careful warm-up. Checking an address first costs about a tenth of a cent.
Kavik.email catches dead, disposable and trap addresses before they touch your sender reputation.
How it works
Three steps from a list you're unsure about to one you can trust.
Upload your list
Drop a CSV or Excel file into the dashboard.
Kavik.email checks every address
Each one goes through 28 checks, from spelling and domain records to a live conversation with its mail server that stops before any message is sent.
Get it back sorted
Every address comes back with a verdict and a score from 0 to 100, ready to download.
Why teams switch to Kavik.email
If you've cleaned a list and still watched it bounce, these are the differences that matter. All four are true on every plan, including the free one.
Every big provider gets its own check
Catch-all is its own verdict
You only pay for answers
Credits that never expire
Two more ways to use it
The same engine also works inside your product, or inside your own network.
Check signups as they happen
Connect your signup form, CRM or app with one API call, or use the official SDKs for JavaScript and Python. Typos and throwaway addresses get flagged before they reach your database.
Read the API docsRun it on your own servers
Get the same engine as Docker images and run it inside your own network. Unlimited verifications cost a flat $4,995 a year, with updates and support included.
Self-hosted licenseFor developers
One request in, one verdict back. The docs cover every field, bulk jobs and webhooks.
curl -X POST "https://api.kavik.email/api/v1/verify" \
-H "X-API-Key: eva_your_key" \
-H "Content-Type: application/json" \
-d '{"email": "jane@acmecorp.com"}'{
"data": {
"email": "jane@acmecorp.com",
"score": 94,
"risk": "safe",
"syntax_valid": true,
"mx_found": true,
"smtp_check": "deliverable"
}
}Response trimmed for length. In the API, the valid verdict is called "safe".
Flat pricing $1 per 1,000 verifications
On every paid plan, with the full 28-check suite.
Free
300 free checks when you sign up, including list uploads
Starter
20,000 verifications a month
Pro
50,000 verifications a month
Credit packs are a flat $1.20 per 1,000 at any size.
Real uptime on our status page · MCP server for AI agents with any plan or credit pack
Find out what's really on your list.
Upload the whole file, and the first 300 addresses are checked free.