# Send post-purchase emails from Postgres with Gmail and Groq AI: n8n workflow

> Started by a clock, and works across Gmail and Postgres. It hands the judgement calls to Groq.

Source: https://millionrounds.com/workflow/send-post-purchase-emails-from-postgres-with-gmail-and-groq- (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 post-purchase emails from Postgres with Gmail and Groq AI

Started by a clock, and works across Gmail and Postgres. It hands the judgement calls to Groq. 16 steps, 1 branch, 3 loops or waits: a working afternoon to understand properly.

Medium Calls a model: Groq

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fsend-post-purchase-emails-from-postgres-with-gmail-and-groq-)

**16 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**3** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 4 Logic 6 Service 5

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

- 1 **Format AI response** Code *Logic*
- 2 **Get Product Usage Tips** Agent *Model*
- 3 **Get Complementary Products** Agent *Model*
- 4 **Code in JavaScript** Code *Logic*
- 5 **Schedule Trigger** Schedule trigger *Starts it*
- 6 **Groq Chat Model** Lm Chat Groq *Model*
- 7 **Groq Chat Model1** Lm Chat Groq *Model*
- 8 **Send Tips to User** Gmail *Service*
- 9 **Send Tips to User1** Gmail *Service*
- 10 **Execute a SQL query** Postgres *Service*
- 11 **Wait for 2 weeks** Wait *Logic*
- 12 **Order Placed Ack.** Gmail *Service*
- 13 **Wait until product get deliver** Wait *Logic*
- 14 **Select rows from a table** Postgres *Service*
- 15 **If** If *Logic*
- 16 **Wait for a day** Wait *Logic*

## How it's built

- **Starts on:** A clock
- **Steps:** 16, with 1 branch, 3 loops or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Postgres
- **Model:** Groq

## Questions

What does it need to run?

An n8n account, plus your own Gmail and Postgres accounts, and a key for Groq. You connect your own accounts after importing it; none are included.

What starts it?

It starts on a clock.

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. 16 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 16 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-post-purchase-emails-from-postgres-with-gmail-and-groq-)
- **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)[Postgres](https://millionrounds.com/workflows?service=Postgres#library)

## Workflows like it

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

- [**AI-powered sustainability newsletter for marketing with Gmail** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/ai-powered-sustainability-newsletter-for-marketing-with-gmai)
- [**Automated social media content creation with OpenAI** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-social-media-content-creation-with-openai)
- [**Blog-to-Avatar Video Creator & Multi-Platform Auto-Poster** 16 steps · calls a model · Gmail](https://millionrounds.com/workflow/blog-to-avatar-video-creator-and-multi-platform-auto-poster)
- [**Clean Gmail social, promotions and updates with OpenRouter** 16 steps · calls a model · Gmail](https://millionrounds.com/workflow/clean-gmail-social-promotions-and-updates-with-openrouter)
- [**Convert newsletters into AI podcasts with OpenAI** 16 steps · calls a model · Gmail](https://millionrounds.com/workflow/convert-newsletters-into-ai-podcasts-with-openai)
- [**Daily podcast summary with OpenAI and Gmail** 16 steps · calls a model · Gmail](https://millionrounds.com/workflow/daily-podcast-summary-with-openai-and-gmail)