Routing Number Lookup API + Gmail Integration

Why connect them

The Routing Number Lookup API in Gmail.

Gmail is the world's most popular email service. Integrating APIs with Gmail enables automated email processing, intelligent responses, and data extraction from messages. Transform your inbox into an automated workflow engine.

What you can build

Workflows worth wiring.

Extract and validate email addresses from incoming messages

Automatically categorize emails based on content analysis APIs

Generate response drafts using data from external APIs

Process attachments through document analysis APIs

Templates

Ready-made ideas.

Scheduled daily trigger Fetch routing lookup for submitted routing numbers → send Gmail with bank, city, and state for each

Bank Verification Report via Gmail

Receive a daily email report with bank verification details for all submitted routing numbers.

New payment event Fetch routing lookup → if lookup fails, send Gmail alert with the invalid routing number

Invalid Routing Number Alert via Gmail

Get a Gmail alert when an invalid routing number is submitted for payment processing.

Setup

Connect it in a few steps.

Set up with Zapier

1
Set the trigger. Create a Zap with Gmail as the trigger app and "New email" as the event. Connect your account.
2
Add the API action. Add APIVerve as the action, select the Routing Number Lookup API, and map your trigger data to the request.
3
Send it back. Add a second Gmail action for "Send email" and map the returned fields (like routing_number) into it.
4
Test & turn on. Test the Zap with real data to confirm the mapping, then turn it on.

Set up with Make

1
Add the trigger. Create a scenario and add a Gmail module set to "New email". Authenticate your account.
2
Call the API. Add an HTTP module pointing at api.apiverve.com/v1/routinglookup with your x-api-key header. Pass the trigger's data as the input.
3
Parse & map. Add a JSON module to read the response, then a Gmail module for "Send email". Map fields like data.routing_number into place.
4
Activate. Run once to confirm the mapping, then switch the scenario on and set its schedule.

Set up with n8n

1
Add the trigger node. Start a workflow with a Gmail trigger node for "New email" and connect your credentials.
2
Add an HTTP Request node. Point it at api.apiverve.com/v1/routinglookup using Header Auth (x-api-key). Feed in the trigger data.
3
Map with expressions. Add a Gmail node for "Send email" and reference the response with expressions such as {{ $json.data.routing_number }}.
4
Execute & activate. Execute manually to verify, then activate the workflow for production.

The payload

What Gmail receives.

routing_number"121000358"

office_code"O"

record_type_code"1"

new_routing_number"000000000"

bank"BANK OF AMERICA, N.A."

address"8001 VILLA PARK DRIVE"

Routing Number Lookup API + Gmail