Automation library · Money admin

Send escalating invoice reminders with Notion and Claude

Started by a clock, and works across Gmail, Notion and Telegram. It hands the judgement calls to Claude. 12 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: Claude

Download free
12 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
3Services it connects to

The flow

Starts it 1Model 3Logic 4Service 4

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

  1. 1Every Morning at 8 AMSchedule triggerStarts it
  2. 2Anthropic Chat ModelLm Chat AnthropicModel
  3. 3Fetch Invoice RecordsNotionService
  4. 4Draft ReminderAgentModel
  5. 5Structured Output ParserOutput Parser StructuredModel
  6. 6Normalize Notion RecordsCodeLogic
  7. 7Build OutputCodeLogic
  8. 8Calculate Overdue StatusCodeLogic
  9. 9Send Reminder EmailGmailService
  10. 10Update Notion RecordNotionService
  11. 11If At RiskIfLogic
  12. 12Alert Freelancer (At Risk)TelegramService

How it's built

Starts on
A clock
Steps
12, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail, Notion, Telegram
Model
Claude

Questions

What does it need to run?

An n8n account, plus your own Gmail, Notion and Telegram accounts, and a key for Claude. 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 Claude. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 12 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 12 steps before you point it at anything that matters.