Phone and e-mail verification
Verify phone numbers and e-mail addresses.
Confirm that people own the phone number and the e-mail address they give you, and score the risk of each.
How it works
- 1
Send
A one-time passcode goes to the phone number or the e-mail address.
- 2
Confirm
The person enters the code in your flow.
- 3
Score
The number and the address are validated and scored for risk.
Illustration
Contact details you can trust
Phone verification
A one-time passcode sent to the phone number.
E-mail verification
A one-time passcode sent to the e-mail address.
Format validation
Numbers and addresses checked for a valid format.
Reachability
Whether the number or the address can actually be reached.
Phone risk score
A risk score for each phone number.
E-mail risk score
A risk score for each e-mail address.
Integrate in a few calls
Send a code with one call, and confirm it with another.
- Web and mobile SDKsEarly access
- Hosted verification linkAvailable
- No-code portalAvailable
- REST APIEarly access
- WebhooksEarly access
- MCP serverEarly access
RequestIllustration
curl -X POST $NODEID_API/v1/contact-checks \
-H "Authorization: Bearer $NODEID_KEY" \
-d '{ "phone": "+44 7700 900000", "channel": "sms" }'Response
{
"check_id": "cnt_4e3…",
"otp": "sent",
"phone": { "valid": true, "reachable": true, "risk": "low" }
}Know every business and every person you work with
Request a demo, or get your API keys.