# Audit CRM lead data quality with Google Sheets and NeverBounce: n8n workflow

> Started by a clock, and works across Google Sheets. 27 steps, 5 branches: large, and worth reading before you trust it with anything live.

Source: https://millionrounds.com/workflow/audit-crm-lead-data-quality-with-google-sheets-and-neverboun (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)

# Audit CRM lead data quality with Google Sheets and NeverBounce

Started by a clock, and works across Google Sheets. 27 steps, 5 branches: large, and worth reading before you trust it with anything live.

Large

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Faudit-crm-lead-data-quality-with-google-sheets-and-neverboun)

**27 steps** Large: read it before trusting it with anything live

**5** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Logic 19 Service 7

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

- 1 **Sunday 20:00** Schedule trigger *Starts it*
- 2 **config** Code *Logic*
- 3 **[cred] Sheets - read leads** Google Sheets *Service*
- 4 **audit and safe autofix** Code *Logic*
- 5 **prepare audit results** Code *Logic*
- 6 **anything to write back?** If *Logic*
- 7 **prepare safe fixes for Leads** Code *Logic*
- 8 **sheet was already clean** No Op *Logic*
- 9 **writes enabled?** If *Logic*
- 10 **merge** Merge *Logic*
- 11 **[cred] Sheets - update safe fixes in place** Google Sheets *Service*
- 12 **STOP: dry run - nothing written** No Op *Logic*
- 13 **pick stale addresses** Code *Logic*
- 14 **NeverBounce configured?** If *Logic*
- 15 **anything stale?** If *Logic*
- 16 **merge recheck** Merge *Logic*
- 17 **[cred] NeverBounce - recheck** Http Request *Service*
- 18 **nothing to recheck** No Op *Logic*
- 19 **build quality report** Code *Logic*
- 20 **apply recheck results** Code *Logic*
- 21 **[cred] Sheets - log quality summary** Google Sheets *Service*
- 22 **[cred] Sheets - write recheck results** Google Sheets *Service*
- 23 **prepare human review items** Code *Logic*
- 24 **Webhook configured?** If *Logic*
- 25 **[cred] Sheets - log human review items** Google Sheets *Service*
- 26 **[cred] Post the report** Http Request *Service*
- 27 **End** No Op *Logic*

## How it's built

- **Starts on:** A clock
- **Steps:** 27, with 5 branches
- **Size:** Large: read it before trusting it with anything live
- **Connects to:** Google Sheets
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

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

What starts it?

It starts on a clock.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Take your time. At 27 steps it is large: read it before trusting it with anything live.

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 27 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%2Faudit-crm-lead-data-quality-with-google-sheets-and-neverboun)
- **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.

- [**Zip code-based business lead generation with Google Maps** 27 steps · Discord, Google Sheets](https://millionrounds.com/workflow/zip-code-based-business-lead-generation-with-google-maps)
- [**AI prospect researcher +ISCP only need company name and domain** 27 steps · calls a model · Google Docs, Google Sheets](https://millionrounds.com/workflow/ai-prospect-researcher-iscp-only-need-company-name-and-domai)
- [**Agentic B2B lead enrichment from Google Search to Google Sheets** 27 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/agentic-b2b-lead-enrichment-from-google-search-to-google-she)
- [**Domain outbound: automate lead extraction, and targeted outreach** 27 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/domain-outbound-automate-lead-extraction-and-targeted-outrea)
- [**Generate and enrich local business leads with Decodo** 27 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/generate-and-enrich-local-business-leads-with-decodo)
- [**Generate and qualify B2B leads from Telegram with Google Maps** 27 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/generate-and-qualify-b2b-leads-from-telegram-with-google-map)