n8n Phone & Email Validation Integration
Validate phone, email, and IP data automatically across n8n, so your team works from clean, verified records.
The 1Lookup n8n integration validates phone, email, and IP data for n8n. 1Lookup checks phone line type and carrier, email deliverability, and IP risk (VPN, proxy, and fraud signals), then returns structured results so n8n acts on verified, lower-risk data instead of guesswork.
Why validate n8n data with 1Lookup
n8n moves data between your apps automatically, which means bad records propagate automatically too. Adding a 1Lookup step to your n8n workflows validates phone numbers and emails in transit, so only clean, verified data reaches the tools downstream.
Drop 1Lookup into any n8n workflow to validate on create/update, branch on the result, and write verified fields onward, with no per-app integration required.
What you can do
Phone validation
Validity, line type, and carrier for every number flowing through n8n.
Email verification
Deliverability plus disposable and role-based detection for emails in n8n.
IP & fraud signals
Geolocate the IP and flag VPN/proxy and fraud risk on each n8n record.
One REST API
Validate phone, email, and IP from n8n through a single clean API.
How to connect 1Lookup to n8n
Create a 1Lookup account and API key
Sign up for a free 1Lookup account and generate an API key from the dashboard. Free-tier lookups let you test before rolling out.
Store the key securely
Keep the 1Lookup API key in your backend's secrets store (e.g. environment variables), not in client code.
Call the 1Lookup REST API
From your n8n workflow, send the phone, email, or IP to validate and read the clean JSON response.
Map and persist
Write the validated fields back into n8n for reporting and automation.
Use cases
Validate once, protect everywhere
Add a 1Lookup step in n8n so every connected app receives validated phone and email data.
Conditional routing
Branch n8n workflows on validity: route, tag, or suppress records based on the 1Lookup result.
Frequently asked questions
What does 1Lookup validate for n8n?
1Lookup validates phone (validity, line type, carrier), email (deliverability, disposable/role-based), and IP (geolocation, VPN/proxy, risk) data. You choose which fields to store in n8n.
Do I need to write code to use 1Lookup with n8n?
Yes, this integration calls the 1Lookup REST API, so it suits developer workflows. You authenticate with an API key and map the JSON response into n8n.
Can I validate records I already have in n8n?
Yes. Alongside real-time validation, you can run existing n8n records through 1Lookup batch validation and write the cleaned results back.
How long does setup take?
Setup is quick for most teams. The exact time depends on how many fields you map and whether you validate in real time, in bulk, or both.