Summarize Gmail into Notion with OpenAI and create audio digests in Google Drive

Gmail → AI Summary → Notion + Audio Digest

This n8n workflow turns incoming Gmail emails into structured AI summaries and optional audio digests, automatically delivered to Notion and Google Drive.

It is designed to reduce email overload by transforming raw messages into concise, readable, and listenable content.

What this workflow does

On a scheduled basis, the workflow:

Retrieves Gmail messages (all subjects or filtered)

Marks processed emails as read to avoid duplicates

Extracts and normalizes the email body

Uses OpenAI to generate a clean, structured summary

From the summary, the workflow branches into two outputs:

Text summary

The final AI-generated summary is appended as a block in Notion

Ideal for daily logs, knowledge bases, or team dashboards

Audio transcript (optional)

The summary text is converted into speech using a TTS model

The audio file is uploaded to Google Drive

A shareable link is generated

The audio reference is added back into Notion

Key features

Automated Gmail ingestion

AI-powered email summarization

JavaScript preprocessing for clean input

Notion integration for structured storage

Text-to-speech audio generation

Google Drive hosting for audio files

Error-aware branching for TTS generation

Idempotent and schedule-safe execution

Typical use cases

Daily or weekly email digests

Executive summaries of inbox activity

Audio briefings you can listen to on the go

Knowledge capture from important emails

Reducing cognitive load from long email threads

Who this template is for

Professionals dealing with high email volume

Teams using Notion as a central workspace

n8n users building AI productivity automations

Anyone who wants emails summarized instead of skimmed

This template is designed to be practical, extensible, and production-ready, and can be easily adapted to:

multiple Gmail labels

different summary styles

alternative TTS providers

additional destinations (Slack, Docs, databases)