# Find & verify business emails with OpenRouter and Serper: n8n workflow

> Started by an event in a connected app, and works across Google Sheets. It hands the judgement calls to OpenRouter.

Source: https://millionrounds.com/workflow/find-and-verify-business-emails-with-openrouter-and-serper (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Lead generation](https://millionrounds.com/workflows?category=Lead+generation#library)

# Find & verify business emails with OpenRouter and Serper

Started by an event in a connected app, and works across Google Sheets. It hands the judgement calls to OpenRouter. 10 steps, 1 branch, 1 loop or waits: a working afternoon to understand properly.

Medium Calls a model: OpenRouter

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Ffind-and-verify-business-emails-with-openrouter-and-serper)

**10 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**1** Loop or waits

**1** Service it connects to

## The flow

Starts it 1 Model 3 Logic 2 Service 4

The steps in the order they run, from what starts it.

- 1 **When clicking ‘Test workflow’** Manual trigger *Starts it*
- 2 **OpenRouter Chat Model** Lm Chat Open Router *Model*
- 3 **Structured Output Parser** Output Parser Structured *Model*
- 4 **Get Rows** Google Sheets *Service*
- 5 **AI Agent** Agent *Model*
- 6 **Get Email Pattern** Http Request *Service*
- 7 **Verify Email** Http Request *Service*
- 8 **Has Snippet Results?** If *Logic*
- 9 **Update Rows** Google Sheets *Service*
- 10 **Loop Over Items** Split In Batches *Logic*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 10, with 1 branch, 1 loop or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets
- **Model:** OpenRouter

## Questions

What does it need to run?

An n8n account, plus your own Google Sheets account, and a key for OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an event in a connected app.

Does it use AI?

Yes. It calls OpenRouter. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 10 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 10 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Ffind-and-verify-business-emails-with-openrouter-and-serper)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)

## Workflows like it

Also lead generation, with the same services where possible, closest in size first.

- [**Automate Gmail lead follow-up with OpenAI and HubSpot** 10 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-gmail-lead-follow-up-with-openai-and-hubspot)
- [**Automate lead follow-ups with OpenAI** 10 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-lead-follow-ups-with-openai)
- [**Automated lead capture & AI follow-up workflow with OpenAI** 10 steps · calls a model · ClickUp, Gmail](https://millionrounds.com/workflow/automated-lead-capture-and-ai-follow-up-workflow-with-openai)
- [**Automated web scraper for industry-specific qualified leads** 10 steps · calls a model · Email, Google Sheets](https://millionrounds.com/workflow/automated-web-scraper-for-industry-specific-qualified-leads)
- [**Classify & enrich contacts with OpenAI and Airtable** 10 steps · calls a model · Airtable, Google Sheets](https://millionrounds.com/workflow/classify-and-enrich-contacts-with-openai-and-airtable)
- [**Cold email outreach personalized by business with Gmail** 10 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/cold-email-outreach-personalized-by-business-with-gmail)