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Automatic invoice detection & reminder creation with Gmail & Google Tasks

n8nn8n10 modulesv1.0
GmailOpenAI

This workflow contains community nodes that are only compatible with the self-hosted version of n8n. Who is this for? This workflow is for anyone who receives invoices by email and wants to stay on top of payment deadlines without manual tracking. What problem is this workflow solving? Invoices often get buried in your inbox. This workflow uses AI to find them, extracts key details, and adds a task to remind you to pay before it’s overdue. No more missed payments. No more manual tracking. How i

At a glance

Automatic invoice detection & reminder creation with Gmail & Google Tasks is a ready-made n8n workflow you import as a workflow JSON file — no build required. It connects Gmail, OpenAI. It's free to download. Follow the 5-step import below to go live in minutes.

Platform
n8n
Connects
Gmail, OpenAI
Modules
10
Price
Free
Version
v1.0
Automatic invoice detection & reminder creation with Gmail & Google Tasks workflow diagram

About this workflow

This workflow contains community nodes that are only compatible with the self-hosted version of n8n. Who is this for? This workflow is for anyone who receives invoices by email and wants to stay on top of payment deadlines without manual tracking. What problem is this workflow solving? Invoices often get buried in your inbox. This workflow uses AI to find them, extracts key details, and adds a task to remind you to pay before it’s overdue. No more missed payments. No more manual tracking. How it works? 1. This workflow is triggered on a schedule (By default, every hour). 2. It checks your Gmail inbox for unread messages. 3. Each email is passed to an AI agent (using OpenAI), which decides whether it’s an invoice. 4. If an invoice is found: - A task is created in your Google Tasks with the payment reminder and due date. - The email is labeled (for tracking) and marked as read. 5. If not an invoice: - The email is skipped (no action taken). How to set up? 1. Connect these services in your n8n credentials: - Gmail (OAuth2) - OpenAI - Google Tasks 2. Create Gmail label Go to Gmail and create a label named Invoice. This label will be applied to processed invoice emails. 3. Choose your Google Task list In the task creation node, select the correct task list for your reminders. 4. Set the schedule In the Schedule Trigger node, choose how often it should check your inbox. How to customize this workflow to your needs? - Change the Gmail label Update the label applied to emails after they are processed. - Edit the AI prompt Adjust the system prompt in the OpenAI node if your invoices follow a unique format. - Update the task format Modify the task title and notes to suit how you like your reminders to look. - Adjust the schedule Run it more or less frequently based on how many invoices you receive.

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How to import this n8n workflow

  1. 1

    Download the workflow JSON file after purchase.

  2. 2

    Open n8n → click the menu → Import from File.

  3. 3

    Select the downloaded JSON and import.

  4. 4

    Set up credentials for each node that requires them.

  5. 5

    Click Execute Workflow to test, then activate.

Setup guide

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