Send tiered contract renewal Slack alerts from Google Sheets

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1. Workflow Overview

What this workflow does Runs every morning at 9am. Reads every contract from the 5 tabs in your Contracts sheet, checks how many days are left until each , and pings Slack with tiered alerts so no ...

Best for

Document Extraction automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.if, n8n-nodes-base.switch, n8n-nodes-base.slack, n8n-nodes-base.scheduletrigger, n8n-nodes-base.googlesheets, n8n-nodes-base.merge, n8n-nodes-base.set, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Felix.

Original n8n.io source

1.1 Workflow description

Title: Send tiered contract renewal Slack alerts from Google Sheets
Workflow name: Send tiered contract renewal Slack alerts from Google Sheets

What this workflow does

Runs every morning at 9am. Reads every contract from the 5 tabs in your Contracts sheet, checks how many days are left until each Cancellation Deadline, and pings Slack with tiered alerts so no renewal slips through.

Alert tiers

Days until deadline	Tier	Message
≤ 7	🔴 Urgent	Act now
≤ 14	🟡 Action needed	Plan this week
≤ 30	🟢 Heads-up	On your radar
> 30 or past due	—	No alert

Auto-renewing contracts get a stronger warning than contracts that simply expire – because that's the case where money is actually at stake.

Setup guide

1. Add two columns to every tab in your Contracts sheet Open your sheet and add these two columns to all 5 tabs (SaaS, Leases, Services, Insurance, Other):

Last Alert Tier
Last Alert Date

Leave both empty for existing rows. These drive the de-duplication – without them you'll get the same ping every day for weeks.

2. Paste your Sheet ID Replace YOUR_GOOGLE_SHEET_ID in all 5 Read nodes. It's the same Sheet you used in Part 1.

3. Set your Slack channel Replace YOUR_SLACK_CHANNEL_ID in all 3 Slack nodes with the channel (or DM) where alerts should land. #contracts or #finance-alerts work well; DM to the contract owner is fine too.

4. Connect credentials

Google Sheets → OAuth
Slack → OAuth

5. Activate and test Before turning it on, temporarily set one row's Cancellation Deadline to ~10 days from today and clear its Last Alert Tier. Click Execute Workflow and confirm a 🟡 Slack message lands. Revert the row, then activate.

Known limitations (v1)

No automatic writeback. Today the workflow alerts but doesn't mark the row as "alerted". To stop daily re-pings, either:

Fill Last Alert Tier manually when the alert fires (🟢 / 🟡 / 🔴), or
Add a Google Sheets Update node per tab (Switch by Contract Class, match on Start Date + Provider Name as a composite key)

Works on ISO dates only. The days_left calculation assumes Cancellation Deadline is stored as YYYY-MM-DD. Part 1 produces this format correctly, so this is only a concern if you're adding rows manually.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Needs Alert Today?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 2 - Route by Tier

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.4

Block 3 - Slack: Urgent (Red)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 4 - Slack: Action (Yellow)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 5 - Slack: Heads-up (Green)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 6 - Trigger: Daily at 9am

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.1

Block 7 - Read: Services Tab

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 8 - Read: Leases Tab

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 9 - Read: SaaS Tab

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 10 - Read: Insurance Tab

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 11 - Read: Other Tab

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 12 - Merge: All Contracts

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 13 - Calculate Tier & Days Left

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 14 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 19 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 20 - Sticky Note6

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 21 - Sticky Note7

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Send tiered contract renewal Slack alerts from Google Sheets
Complexity	advanced
Nodes	21
Categories	Document Extraction
Author	Felix
Published	22 Apr 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/15231/15231.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows

Frequently asked questions

What does Send tiered contract renewal Slack alerts from Google Sheets do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction use case.

Felix

24 workflows

Nodes

n8n-nodes-base.if n8n-nodes-base.switch n8n-nodes-base.slack n8n-nodes-base.scheduletrigger n8n-nodes-base.googlesheets n8n-nodes-base.merge n8n-nodes-base.set n8n-nodes-base.stickynote

Complexity

advanced

Published 22 Apr 2026

Likes 0

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Install path: /data/workflows/15231/15231.json

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Send tiered contract renewal Slack alerts from Google Sheets

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

What this workflow does

Alert tiers

Setup guide

Known limitations (v1)

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Needs Alert Today?

Block 2 - Route by Tier

Block 3 - Slack: Urgent (Red)

Block 4 - Slack: Action (Yellow)

Block 5 - Slack: Heads-up (Green)

Block 6 - Trigger: Daily at 9am

Block 7 - Read: Services Tab

Block 8 - Read: Leases Tab

Block 9 - Read: SaaS Tab

Block 10 - Read: Insurance Tab

Block 11 - Read: Other Tab

Block 12 - Merge: All Contracts

Block 13 - Calculate Tier & Days Left

Block 14 - Sticky Note

Block 15 - Sticky Note1

Block 16 - Sticky Note2

Block 17 - Sticky Note3

Block 18 - Sticky Note4

Block 19 - Sticky Note5

Block 20 - Sticky Note6

Block 21 - Sticky Note7

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions