# WhatsApp reminder system: n8n workflow template

> Started by a clock, and works across n8n data table. 14 steps, 2 branches: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/whatsapp-reminder-system (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Scheduling](https://millionrounds.com/workflows?category=Scheduling#library)

# WhatsApp reminder system

Started by a clock, and works across n8n data table. 14 steps, 2 branches: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fwhatsapp-reminder-system)

**14 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 2 Logic 6 Service 6

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

- 1 **Scheduled Check (Every Minute)** Schedule trigger *Starts it*
- 2 **Error Handler Trigger** Error trigger *Starts it*
- 3 **Get Pending Reminders from Database** Data Table *Service*
- 4 **Send Error Notification via WhatsApp** Evolution Api *Service*
- 5 **Extract Reminder Data Fields** Set *Logic*
- 6 **Normalize DateTime to UTC** Code *Logic*
- 7 **Check If Reminder Is Due** If *Logic*
- 8 **Route By Recipient Type** If *Logic*
- 9 **Normalize Phone Number (Internal)** Code *Logic*
- 10 **Normalize Phone Number (External)** Code *Logic*
- 11 **Send WhatsApp Reminder (Internal)** Evolution Api *Service*
- 12 **Send WhatsApp Reminder (External)** Evolution Api *Service*
- 13 **Update Status to SENT (Internal)** Data Table *Service*
- 14 **Update Status to SENT (External)** Data Table *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 14, with 2 branches
- **Size:** Medium: a working afternoon
- **Connects to:** n8n data table
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on a clock.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 14 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 14 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fwhatsapp-reminder-system)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[n8n data table](https://millionrounds.com/workflows?service=n8n+data+table#library)

## Workflows like it

Also scheduling, with the same services where possible, closest in size first.

- [**Batch upload Instagram Reels to YouTube** 14 steps · YouTube, n8n data table](https://millionrounds.com/workflow/batch-upload-instagram-reels-to-youtube)
- [**Route client intake and bookings with Pipedrive and Slack** 14 steps · ClickUp, Gmail](https://millionrounds.com/workflow/route-client-intake-and-bookings-with-pipedrive-and-slack)
- [**Schedule and pause maintenance windows with Zabbix and Nagios** 13 steps · n8n data table](https://millionrounds.com/workflow/schedule-and-pause-maintenance-windows-with-zabbix-and-nagio)
- [**Create daily meeting pages in Confluence** 10 steps · n8n data table](https://millionrounds.com/workflow/create-daily-meeting-pages-in-confluence)
- [**Movie release calendar: Add TMDB films to Google Calendar** 10 steps · Google Calendar, Telegram](https://millionrounds.com/workflow/movie-release-calendar-add-tmdb-films-to-google-calendar)
- [**Track policy and meeting minutes acknowledgments with Gmail** 18 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/track-policy-and-meeting-minutes-acknowledgments-with-gmail)