Automation library · AI assistants

AI email reply assistant – auto-draft smart replies in Gmail

Started by a clock, and works across Gmail. It hands the judgement calls to OpenAI. 13 steps, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

13 stepsMedium: a working afternoon
0Branches: places the flow splits
1Loop or waits
1Service it connects to

The flow

Starts it 1Model 1Logic 6Service 5

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

  1. 1Schedule trigger (1 min)Schedule triggerStarts it
  2. 2Get threads with specific labelsGmailService
  3. 3Loop over threadsSplit In BatchesLogic
  4. 4Get single message contentGmailService
  5. 5Get thread messagesGmailService
  6. 6Ask OpenAI AssistantOpen AiModel
  7. 7Return last message in threadLimitLogic
  8. 8Map fields for further processingSetLogic
  9. 9Convert response to HTMLMarkdownLogic
  10. 10Build email rawSetLogic
  11. 11Convert raw to base64CodeLogic
  12. 12Add email draft to threadHttp RequestService
  13. 13Remove AI label from emailGmailService

How it's built

Starts on
A clock
Steps
13, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Gmail
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Gmail account, 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. 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.