Automation library · Content

Convert newsletters into AI podcasts with OpenAI

Started by an arriving email, and works across Gmail. It hands the judgement calls to OpenAI. 16 steps, 1 branch, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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16 stepsMedium: a working afternoon
1Branch: places the flow splits
1Loop or waits
1Service it connects to

The flow

Starts it 1Model 1Logic 7Service 7

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

  1. 1Get NewsletterGmail triggerStarts it
  2. 2Generate Dialogue ScriptOpen AiModel
  3. 3Split scriptCodeLogic
  4. 4Loop Over ItemsSplit In BatchesLogic
  5. 5Save Audio ChucksRead Write FileService
  6. 6Function Node – Clean SegmentCodeLogic
  7. 7Generate `concat_list.txt`CodeLogic
  8. 8IfIfLogic
  9. 9Save concat_listRead Write FileService
  10. 10Function Node – Prepare Text for TTSCodeLogic
  11. 11Function Node – Prepare Text for TTS1CodeLogic
  12. 12Join audio chucks and delete all filesExecute CommandService
  13. 13Function Node – Prepare Text for TTS - Voice 1Http RequestService
  14. 14Function Node – Prepare Text for TTS - Voice 2Http RequestService
  15. 15read final_mergedRead Write FileService
  16. 16Send audioGmailService

How it's built

Starts on
An arriving email
Steps
16, with 1 branch, 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 an arriving email.

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. 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.