# Auto-draft professional email replies with Gmail and Slack: n8n workflow

> Started by a clock, and works across Gmail and Slack. It hands the judgement calls to OpenAI. 10 steps, 2 branches: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/auto-draft-professional-email-replies-with-gmail-and-slack (Millionrounds; every figure on the page links to its filing or article)

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

# Auto-draft professional email replies with Gmail and Slack

Started by a clock, and works across Gmail and Slack. It hands the judgement calls to OpenAI. 10 steps, 2 branches: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fauto-draft-professional-email-replies-with-gmail-and-slack)

**10 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 1 Logic 4 Service 4

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

- 1 **Schedule Trigger** Schedule trigger *Starts it*
- 2 **OPTIONAL – Auto-send reply** If *Logic*
- 3 **Search unreplied emails** Gmail *Service*
- 4 **Check if new emails exist** If *Logic*
- 5 **Limit - Max emails per run** Limit *Logic*
- 6 **Gmail - Get message details** Gmail *Service*
- 7 **Extract email body for AI** Code *Logic*
- 8 **Mark email as AUTO_REPLIED** Gmail *Service*
- 9 **AI - Draft professional email reply** Open Ai *Model*
- 10 **Notify draft reply in Slack** Slack *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 10, with 2 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Slack
- **Model:** OpenAI

## Questions

What does it need to run?

An n8n account, plus your own Gmail and Slack accounts, and a key for OpenAI. 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 OpenAI. 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%2Fauto-draft-professional-email-replies-with-gmail-and-slack)
- **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)[Slack](https://millionrounds.com/workflows?service=Slack#library)

## Workflows like it

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

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- [**Ask a human for help when the AI doesn't know the answer** 10 steps · calls a model · Slack](https://millionrounds.com/workflow/ask-a-human-for-help-when-the-ai-doesn-t-know-the-answer)
- [**Business intelligence assistant for Slack with Explorium MCP** 10 steps · calls a model · Slack](https://millionrounds.com/workflow/business-intelligence-assistant-for-slack-with-explorium-mcp)
- [**Capture and log trade instructions from Gmail with Gemini** 10 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/capture-and-log-trade-instructions-from-gmail-with-gemini)
- [**Classify & process IT requests with Jotform and Gemini** 10 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/classify-and-process-it-requests-with-jotform-and-gemini)
- [**Classify Intercom messages & route to ClickUp or Slack** 10 steps · calls a model · ClickUp, Slack](https://millionrounds.com/workflow/classify-intercom-messages-and-route-to-clickup-or-slack)