How to Send a Slack Notification from monday.com at a Specific Time

Published June 2026 · 5 min read · By Lucas Milanez, Software Engineer

Your team lives in Slack. Your deadlines live in monday.com. You want a Slack message to appear at a specific time — say, 30 minutes before a client call, or exactly when an SLA deadline hits. Not "sometime this morning." At the actual time in your date column.

This guide shows you three ways to do it, with an honest look at what works and what doesn't. Then we'll walk through the most precise method step by step.

The problem: monday.com can't send time-precise Slack alerts

Monday.com has a native Slack integration. It can send messages when a status changes, when someone is assigned, or when a date arrives. But the "when date arrives" trigger has a critical limitation: it fires in a daily batch, typically around 7 AM. The time component of your DateTime column is ignored entirely.

So if your board has a "Client Meeting" column set to "June 15, 14:30", and you want a Slack reminder 30 minutes before (at 14:00), the native integration will send that reminder at 7 AM instead. Seven hours too early.

For teams managing client-facing deadlines, shift changes, live events, or time-sensitive handoffs, this is a real gap.

Your three options

Option A: Native monday → Slack integration

Setup: 2 minutes. Add the Slack integration, pick "When date arrives, send a message to channel."

Precision: Daily batch only. You get the notification on the right day, but not at the right time.

Cost: Free.

Verdict: Good enough if you just need a "today's deadlines" morning digest. Useless for time-specific alerts.

Option B: Zapier with Schedule trigger

Setup: 20-40 minutes. Create a Zap: monday.com trigger → Filter step (check date) → Delay step → Slack message action.

Precision: 1-15 minutes of latency depending on your plan. The Schedule by Zapier trigger checks every 15 minutes on the free plan, every 1-2 minutes on paid.

Cost: $29.99/month minimum (Starter plan, 750 tasks). Each Slack notification burns 2-3 tasks (trigger + filter + action).

Verdict: Works, but expensive for a simple notification workflow. And you still get 1-5 minutes of delay — fine for most cases, frustrating for precision-critical workflows.

Option C: Precise Triggers webhook → Slack Incoming Webhook

Setup: 5-10 minutes total. Create a trigger in Precise Triggers with "Send Webhook" action, point it at a Slack Incoming Webhook URL.

Precision: Under 30 seconds from the exact DateTime in your column.

Cost: Free tier (25/month) or $19/month for 500 automations.

Verdict: Most precise, simplest setup for date-to-Slack workflows. Limited to what you can do with Slack's Incoming Webhook format.

Step-by-step: Precise Triggers + Slack webhook

Here's the full walkthrough for Option C. You'll need: a monday.com account, a Slack workspace where you can add apps, and about 10 minutes.

Step 1: Create a Slack Incoming Webhook

1. Go to api.slack.com/apps and click Create New App → From scratch.
2. Name it something like "monday Alerts" and select your workspace.
3. In the left sidebar, click Incoming Webhooks and toggle it On.
4. Click Add New Webhook to Workspace and pick the channel where you want notifications (e.g., #deadlines or #team-alerts).
5. Copy the webhook URL. It looks like: https://hooks.slack.com/services/T00000/B00000/XXXXXXX

Keep this URL handy — you'll paste it in the next step.

Step 2: Install Precise Triggers

If you haven't already, install Precise Triggers on your monday.com account:

Step 3: Add the board view

Open the board that has your DateTime column (the one with the deadlines you want to alert on). Click the + button in the views bar at the top and select Precise Triggers.

Step 4: Create the webhook trigger

1. Select your date column — the column that holds the DateTime you want to fire at.
2. Choose "Send Webhook" as the action.
3. Paste your Slack Incoming Webhook URL in the webhook URL field.
4. Optionally set a condition — for example, "Only run if Status is not Done" to avoid alerting on already-completed items.
5. Click Create Trigger.

Step 5: Understand the payload

When the trigger fires, Precise Triggers sends a JSON POST request to your Slack webhook URL. The payload includes:

{
  "text": "🔔 Trigger fired: Client Presentation is due now",
  "itemName": "Client Presentation",
  "boardId": "1234567890",
  "itemId": "9876543210",
  "scheduledAt": "2026-06-15T14:30:00.000Z",
  "triggerId": "abc-123-def"
}

Slack's Incoming Webhook reads the text field and posts it as a message in your channel. The item name and scheduled time are included automatically so your team knows exactly which item triggered the alert and when it was supposed to fire.

Step 6: Test it

Set a date column on one of your items to 2-3 minutes from now. Watch your Slack channel. Within 30 seconds of that time, the message should appear. If it works, you're done.

Advanced: alerting 30 minutes before a deadline

The scenario above fires at the exact DateTime. But what if you want to fire 30 minutes before?

The simplest approach: create a formula column on your board that subtracts 30 minutes from the deadline column. Then point your Precise Trigger at the formula column instead of the raw deadline.

Formula: SUBTRACT_DAYS({Deadline}, 0) - 30/1440 (monday's formula engine works in days, so 30 minutes = 30/1440 of a day).

Alternatively, create a separate "Alert Time" date column and use a native monday automation to set it to 30 minutes before the deadline whenever the deadline changes. Then point Precise Triggers at the "Alert Time" column.

When this approach works best

• Client meetings: alert the account manager in Slack 30 minutes before a scheduled call.
• SLA deadlines: notify the ops channel the moment an SLA window expires so someone can escalate.
• Shift handoffs: ping the incoming team in Slack exactly at shift change time.
• Release schedules: alert #deployments at the exact Go/No-Go decision time.
• Event coordination: remind speakers or presenters minutes before their slot.

Limitations to know about

• Slack Incoming Webhooks only post to a single channel. If you need per-person DMs, you'll need a more complex Slack app or use Precise Triggers' "Notify Person" action (which sends a monday.com notification, not a Slack DM).
• The webhook payload format is fixed — you can't customize the message template yet. The text field always includes the item name and time.
• If you need rich Slack messages with buttons, Block Kit formatting, or thread replies, you'd need a middleware layer (a small serverless function between Precise Triggers and Slack). For most use cases, the plain text message is sufficient.

Compared to the alternatives

If you're evaluating multiple approaches, we wrote a detailed cost and precision breakdown: monday.com vs Zapier for Date-Based Automations — Cost & Precision Comparison.

For setting up a simple status change at an exact time (without the Slack component), see: How to Auto-Change Status on a Specific Date in monday.com.

Summary

Sending a Slack notification at a specific time from monday.com requires working around the platform's daily-batch limitation. The Precise Triggers webhook approach gives you sub-30-second precision with about 10 minutes of setup. No Zapier subscription, no complex Make scenarios, no per-task billing.

For teams where "the right day" isn't precise enough and "the right minute" is what matters, this is the most direct path from a monday.com DateTime column to a Slack message.