# Send AI-powered post-purchase emails: n8n workflow template

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

Source: https://millionrounds.com/workflow/send-ai-powered-post-purchase-emails (Millionrounds; every figure on the page links to its filing or article)

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

# Send AI-powered post-purchase emails

Started by an event in a connected app, and works across Gmail, Google Sheets, Postgres and WhatsApp. It hands the judgement calls to Groq. 13 steps, 2 loops or waits: a working afternoon to understand properly.

Medium Calls a model: Groq

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fsend-ai-powered-post-purchase-emails)

**13 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**2** Loops or waits

**4** Services it connects to

## The flow

Starts it 1 Model 2 Logic 5 Service 5

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

- 1 **Postgres Trigger1** Postgres trigger *Starts it*
- 2 **Groq Chat Model1** Lm Chat Groq *Model*
- 3 **Execute a SQL query2** Postgres *Service*
- 4 **AI Agent1** Agent *Model*
- 5 **Loop Over Items1** Split In Batches *Logic*
- 6 **Merge1** Merge *Logic*
- 7 **Execute a SQL query3** Postgres *Service*
- 8 **Format AI response1** Code *Logic*
- 9 **Send a message1** Gmail *Service*
- 10 **Send message1** Whats App *Service*
- 11 **Edit Fields1** Set *Logic*
- 12 **Append row in sheet1** Google Sheets *Service*
- 13 **Wait1** Wait *Logic*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 13, 2 loops or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Google Sheets, Postgres, WhatsApp
- **Model:** Groq

## Questions

What does it need to run?

An n8n account, plus your own Gmail, Google Sheets, Postgres and WhatsApp accounts, and a key for Groq. 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 Groq. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 13 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 13 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%2Fsend-ai-powered-post-purchase-emails)
- **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.

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

## Workflows like it

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

- [**AI-generated LinkedIn posts with OpenAI and Google Sheets** 13 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/ai-generated-linkedin-posts-with-openai-and-google-sheets)
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- [**Analyze suspicious email contents with OpenAI** 13 steps · calls a model · Gmail, Jira](https://millionrounds.com/workflow/analyze-suspicious-email-contents-with-openai)
- [**Article maker with OpenAI and Google Sheets** 13 steps · calls a model · Google Sheets, Telegram](https://millionrounds.com/workflow/article-maker-with-openai-and-google-sheets)
- [**Audit website SEO with Groq and Google PageSpeed** 13 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/audit-website-seo-with-groq-and-google-pagespeed)