Validate phone numbers and emails in Zapier with the 1Lookup app
1Lookup has its own Zapier app with 11 actions. Add a 1Lookup step to any Zap, paste your API key once, and it validates phone numbers and email addresses, checks numbers for spam and do-not-call status, and looks up IP addresses. The results go to the next step, so you can filter, tag or update the record.
A 1Lookup step checks every lead before the rest of the Zap runs
Most Zaps copy whatever a form, ad or spreadsheet hands them. A wrong number or a dead email then lands in the CRM, the dialer and the email tool at once. One 1Lookup step after the trigger catches it there.
The step returns plain fields such as valid, line type, carrier, deliverability and risk. Put a Filter or Paths step after it and only good records move on.
What you can do
Phone checks
Validate Phone, Check Phone for Spam and Scrub Phone return validity, line type, carrier, spam reputation and do-not-call status.
Email checks
Validate Email returns deliverability, disposable and role-based flags, and a risk verdict for each address.
Contact lookups
Look up a contact from an email, phone number or IP address, or append a missing email or phone from a name and postal address.
IP and domain data
Look Up IP Address returns location, network and proxy or VPN signals. Analyze Domain SEO returns authority, backlink and traffic data.
The 1Lookup app gives Zapier 11 actions
Validate Phone
Validates a phone number and returns carrier, risk and recommendation data.
Check Phone for Spam
Checks whether a phone number is linked to spam activity and returns reputation data.
Scrub Phone
Returns match status, phone type and do-not-call information for a number.
Validate Email
Returns deliverability, reputation, risk and recommendation data for an email address.
Look Up Contact by Phone
Looks up contact information from a phone number.
Look Up Contact by Email
Looks up contact information from an email address.
Look Up Contact by IP
Looks up contact and location information from an IP address.
Append Email
Finds an email address from a name and postal address.
Append Phone
Finds a phone number from a name and postal address.
Look Up IP Address
Returns location, network, risk and recommendation data for an IP address.
Analyze Domain SEO
Returns authority, backlink, traffic and social data for a domain.
How to add 1Lookup to a Zap
Start your free 1Lookup trial and copy your API key
Sign up at app.1lookup.io and start the 7-day free trial. Then open API Keys in the dashboard and copy your key. You paste it once into the connection and every workflow reuses it.
Add a 1Lookup action to your Zap
After your trigger, add an action step, search for 1Lookup and pick the action you need, for example Validate Phone.
Connect your 1Lookup account
When Zapier asks you to sign in to 1Lookup, paste your API key. Zapier saves the connection for every Zap you build.
Map the field, test, then filter on the result
Map the phone or email field from your trigger and test the step. Add a Filter or Paths step so only valid records continue.
1Lookup also has its own apps on Make, n8n and GoHighLevel.
Each one is a native 1Lookup app: search for 1Lookup, paste your API key once, and add a lookup step to any workflow.
Use cases
Check new HubSpot contacts before sales calls them
New contact in HubSpot, then Validate Phone, then Update Contact with line type and carrier, so reps dial mobiles first.
Use this template on ZapierStop spam numbers from web forms
New form entry, then Check Phone for Spam, then a Filter that only lets clean numbers reach your CRM or Slack channel.
Use this template on ZapierOnly send to emails that will deliver
New subscriber or lead, then Validate Email, then add the address to your email tool only when it comes back deliverable.
Use this template on ZapierClean a Google Sheet as rows arrive
New row in Google Sheets, then Validate Phone or Validate Email, then Update Row with the result in the next columns.
Use this template on ZapierFrequently asked questions
Is the 1Lookup Zapier app free?
The app is free to add. Each action uses 1Lookup credits from your plan, the same as an API call, and Zapier counts the step as one task on your Zapier plan.
Which 1Lookup actions can I use in Zapier?
Eleven: Validate Phone, Check Phone for Spam, Scrub Phone, Validate Email, Look Up Contact by Phone, Look Up Contact by Email, Look Up Contact by IP, Append Email, Append Phone, Look Up IP Address and Analyze Domain SEO.
Can 1Lookup start a Zap?
1Lookup runs as an action step. Start the Zap with any trigger, such as a new form entry, CRM contact or spreadsheet row, and add 1Lookup after it.
Where do I find my API key?
On the API Keys page of your 1Lookup dashboard at app.1lookup.io. Start the 7-day free trial first if you do not have an account.