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January 22, 2026

Keep Notion and Todoist tasks in sync, always

Keep Notion and Todoist tasks in sync, always - n8n workflow automation template
Lisa Granqvist Partner Workflow Automation Expert
Keep Notion and Todoist tasks in sync, always - n8n workflow automation template
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Your tasks are “done” in Todoist, still “In progress” in Notion, and now you’re second-guessing which list to trust. That drift is sneaky. It starts as one missed update and turns into a weekly cleanup ritual.

Marketing managers feel it when campaigns have 30 moving parts. Agency owners run into it when clients want Notion visibility but the team lives in Todoist. And ops folks? They’re usually the ones asked to “just keep it aligned.” A Notion Todoist sync fixes the duplicate work so you update once and move on.

This workflow keeps tasks linked, prevents looping updates, and runs a daily repair pass for anything webhooks miss. You’ll see how it works, what you need, and what to customize so it fits your setup.

How This Automation Works

See how this solves the problem:

n8n Workflow Template: Keep Notion and Todoist tasks in sync, always

The Challenge: Task Lists That Drift Out of Sync

Managing work in two places sounds harmless until the first busy week hits. Someone updates a due date in Todoist on their phone. Another person changes the task status in Notion during a planning session. Now you’ve got two versions of the truth, and the team wastes time reconciling details instead of finishing work. Worse, the mistakes are quiet: a task looks unassigned, a deadline slips a day, or a “deleted” item was actually something you needed for reporting. After a while, people stop trusting the system and start pinging each other for confirmation.

The friction compounds. Here’s where it usually breaks down.

  • Updates happen in the wrong app, so you end up doing the same edit twice.
  • Webhooks are not perfect, and missed events create little pockets of inconsistency that grow over time.
  • Two-way syncing can create “ping-pong” loops where one update triggers another, then another.
  • Deleting tasks is risky, because “oops” deletions are permanent and reporting gets messy.

The Fix: Two-Way Notion ↔ Todoist Sync (With Safeguards)

This automation uses real-time webhooks from both Notion and Todoist to keep tasks aligned within a couple of seconds. When a change comes in, the workflow doesn’t blindly overwrite the other side. It first fetches the current version of the task from both systems, compares what changed, and only then applies the right update. To prevent infinite loops (an update in Notion triggers Todoist, which triggers Notion again), it uses Redis to “lock” that task ID for about 15 seconds. Notion is treated as the primary source of truth, and instead of hard-deleting tasks, the workflow uses an “Obsolete” status so you don’t lose history by accident. On top of that, a daily full sync runs to repair any inconsistencies that slipped through because, frankly, webhooks can’t be trusted 100%.

The workflow starts when Notion or Todoist sends a webhook about a task change. Then n8n retrieves both task records, checks what changed, and updates the other app while a short Redis lock prevents repeat-trigger loops. Finally, the daily sync does a sweep and can send a summary if it had to fix anything.

What Changes: Before vs. After

Real-World Impact

Say your team handles 40 tasks a week and you typically touch each task twice: once in Notion during planning, once in Todoist while executing. If each “double update” costs maybe 1–2 minutes, that’s roughly 1–2 hours a week burned on busywork, plus the occasional cleanup session when statuses drift. With this workflow, you update in either app and let the sync handle the rest (plus the daily full sync that repairs mismatches). For many teams, that’s a couple hours back every week and a lot fewer “wait, which one is right?” moments.

Requirements

  • n8n instance (try n8n Cloud free)
  • Self-hosting option if you prefer (Hostinger works well)
  • Notion for your task database and statuses.
  • Todoist to execute tasks and manage projects.
  • Redis (get it from Redis Cloud or your own server)

Skill level: Intermediate. You’ll be connecting accounts, matching database properties, and doing careful mapping once.

Need help implementing this? Talk to an automation expert (free 15-minute consultation).

The Workflow Flow

A task changes in Notion or Todoist. Each side has a registered webhook, so edits (create, update, status changes) can kick off the sync within seconds.

The workflow fetches the current truth from both apps. Instead of assuming the webhook payload is complete, n8n retrieves the latest task data from Notion and Todoist, then compares fields like name, due date, and status.

A short Redis “lock” prevents infinite loops. When a task syncs from Notion to Todoist (or the other direction), Redis blocks re-processing for about 15 seconds using the task ID, so you don’t get a noisy back-and-forth.

The other side updates, and a daily full sync repairs edge cases. Status mapping handles “Done” and “Obsolete,” the Todoist task ID is stored in Notion so items stay linked, and a scheduled daily workflow fixes drift if a webhook was missed.

You can easily modify field mapping and status rules to match your internal process. See the full implementation guide below for customization options.

Watch Out For

  • Notion credentials can expire or lack access to the right workspace/database. If things break, check the integration token permissions and the database share settings first.
  • If you’re using Wait nodes or external rendering, processing times vary. Bump up the wait duration if downstream nodes fail on empty responses.
  • Redis misconfiguration causes the nastiest failures because loop protection depends on it. If you see repeated sync triggers, verify the Redis connection and confirm the lock key is being written.

Similar Automations

If your goal is simpler capture (Todoist as the inbox, Notion as the plan), Todoist to Notion, tasks captured where you plan is a great companion, especially when you don’t need full two-way syncing for every field.

For teams trying to keep a lightweight “CRM” inside Notion, Keep Notion and Google Contacts in sync, always pairs nicely with task sync so client info and follow-ups don’t drift apart.

When education or training projects are part of your workload, Canvas meets Notion for always current assignments helps keep deadlines and assignments current, then this workflow keeps the execution layer clean in Todoist.

Need a clean way to connect product work to personal execution? Keep Linear and Todoist in sync for a clean task list is useful when tasks originate in Linear but you still want Todoist to be the day-to-day driver.

Finally, if you’re debating between one-way capture and a stricter two-way model, revisiting Todoist to Notion, tasks captured where you plan can help you decide what should flow into Notion versus what should stay execution-only.


Quick reference:

Common Questions

How quickly can I implement this Notion Todoist sync automation?

Plan for about 60–90 minutes if your Notion database and Todoist project already exist.

Can non-technical teams implement this Notion Todoist sync?

Yes, but you’ll want someone detail-oriented to handle the field mapping carefully. No coding, just configuration and testing.

Is n8n free to use for this Notion Todoist sync workflow?

Yes. n8n has a free self-hosted option and a free trial on n8n Cloud. Cloud plans start at $20/month for higher volume. You’ll also need to factor in Redis hosting (often free or cheap at small volume).

Where can I host n8n to run this automation?

Two options: n8n Cloud (managed, easiest setup) or self-hosting on a VPS. For self-hosting, Hostinger VPS is affordable and handles n8n well. Self-hosting gives you unlimited executions but requires basic server management.

How do I adapt this Notion Todoist sync solution to my specific challenges?

You’ll mainly customize the mapping rules: Notion “Status” to Todoist sections, Notion “Priority” to Todoist priority, and what “Obsolete” should do on the Todoist side. If your team uses extra fields (like “Owner” or “Client”), add them to the mapping in the Set/Edit Fields steps and the update requests. Many teams also change the “Notion is the source of truth” behavior so Todoist can override due dates while Notion owns status. Test those rules on a small project first, because the sync is fast and mistakes propagate quickly.

Why is my Notion connection failing in this workflow?

Usually it’s permissions: the integration token can’t see the database, or the database wasn’t shared with the integration. It can also be a stale credential in n8n, so re-save the Notion credential and reselect it in the Notion nodes. If it fails only on certain tasks, double-check the database property names match exactly (case matters) and that your “Status” options include “Obsolete.”

What’s the capacity of this Notion Todoist sync solution?

For most small teams, it comfortably handles day-to-day task changes in real time, because each sync run is just a handful of API calls plus a Redis lock. On n8n Cloud Starter, you can typically support a steady stream of updates as long as you’re not syncing huge databases every few minutes. If you self-host, capacity mostly depends on your server and API rate limits from Notion/Todoist, not n8n itself.

Is this Notion Todoist sync automation better than using Zapier or Make?

Often, yes. Two-way sync with loop prevention is where simpler tools get fiddly, and you can end up paying more just to add branching logic and retries. n8n also gives you the self-hosting option, which is handy if you want lots of executions without watching a meter. The tradeoff is setup time: you’ll spend longer mapping things once. If you want, Talk to an automation expert and we’ll tell you quickly if this is worth it for your volume.

Once this is running, your task system stops being fragile. You’ll spend less time “maintaining the list” and more time actually finishing what’s on it.

Need Help Setting This Up?

Our automation experts can build and customize this workflow for your specific needs. Free 15-minute consultation—no commitment required.

Talk to Automation Expert →

Lisa Granqvist

Workflow Automation Expert

Expert in workflow automation and no-code tools.

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