Slack is where modern teams communicate — but when it comes to making sure you actually show up to a scheduled meeting, its reminder system has a fundamental flaw. Slack notifications live inside Slack. If you're not watching Slack at that moment, or if you've muted a channel, you're going to miss it.
The problem is that Slack doesn't offer outbound phone call reminders. Neither does Google Calendar or Outlook natively. If you want your phone to ring before a scheduled Slack meeting, you need a service that connects to your calendar and places that call automatically. This guide shows you how to set that up in under 60 seconds.
Why Slack Notifications Aren't Enough
Slack's built-in meeting reminders come in two forms: a notification inside the Slack app, and a push alert on your phone. Both have the same limitation — they depend on you noticing a small banner before it disappears. In a busy workday, that's a high bar to clear reliably.
The deeper issue is that Slack notifications are designed for conversations, not hard commitments. A missed Slack message is a normal part of async work. A missed meeting is not. The same notification system that handles "hey can you review this PR" is also how you learn a client call starts in 10 minutes — and the two don't deserve the same level of urgency.
The real problem: Slack notifications live in Slack. A phone call reaches you wherever you are — at your desk, making coffee, or in a different room entirely — and it's much harder to ignore.
| Reminder type | Works off-screen | Bypasses Do Not Disturb | Hard to ignore |
|---|---|---|---|
| Slack in-app notification | No | No | Easy to miss |
| Calendar email reminder | No | No | Buried in inbox |
| Phone push notification | Partially | No | Often dismissed |
| Phone call (Remindavo) | Yes | Yes (many devices) | Very hard to ignore |
How It Works
When a Slack meeting is scheduled, it typically shows up in your calendar — either through Slack's Google Calendar integration, or because the meeting organizer sent a calendar invite. Remindavo connects to that calendar and monitors your upcoming events. A set number of minutes before each one, it calls your phone. You pick up, hear a short voice reminder for the meeting, and have time to open Slack and join on time.
Remindavo never touches Slack directly. It only reads your calendar, which already has the meeting information — title, time, and any notes. This means it covers every scheduled meeting on your calendar automatically, with no per-meeting configuration required.
Setup Guide (Under 60 Seconds)
-
Create your Remindavo account Go to app.remindavo.com and sign up with your Google or Microsoft account. The 14-day trial is free — no credit card required.
-
Connect your calendar Authorize Remindavo to read your Google Calendar or Microsoft Outlook. It uses standard OAuth — it reads your event times and titles but never modifies anything or stores event content.
-
Add your phone number Enter the number where you want to receive reminder calls — your mobile, desk phone, or any number that reliably reaches you. Remindavo sends a quick test call right away so you know it's working before your next meeting.
-
Set your lead time Choose how early before each meeting you want the call — 2 minutes before for a tight heads-up, or 30 minutes ahead if you need more prep time.
-
You're done Remindavo runs in the background. Before every scheduled meeting on your calendar — including Slack meetings — your phone rings. No manual scheduling, no app to check — it just works.
Works for Every Kind of Slack Meeting
Because Remindavo reads your calendar rather than integrating directly with Slack, it covers every type of meeting that shows up there:
- Scheduled Slack Huddles added to Google Calendar or Outlook
- Team standups and recurring check-ins
- Client calls booked via Slack with a calendar invite
- All-hands and company-wide meetings
- One-on-ones scheduled through your calendar
- External calls where the Slack link is in the calendar event
- Any meeting a colleague or client sends you via calendar invite
If it's in your calendar, Remindavo will call you before it.
Common Questions
Does Slack have a phone call reminder built in?
No. Slack's built-in reminders are in-app notifications and push alerts only. To get an actual phone call before a Slack meeting, you need a third-party service like Remindavo that reads your calendar and places outbound calls to your number.
Will I get a reminder call for every meeting or only Slack meetings?
By default, Remindavo calls you before every event in your connected calendar — including Slack meetings, Zoom calls, Teams meetings, and any other event. If you only want reminders for specific calendars or event types, you can configure that in your settings.
Does it work with Slack Huddles specifically?
Slack Huddles are typically spontaneous audio calls started directly in Slack, so they don't create calendar events by default. However, when teams schedule a Huddle in advance and add it to Google Calendar or Outlook, Remindavo will call you before it like any other event.
What if my phone is on silent?
An incoming phone call rings on most devices even in silent mode, depending on your settings. For the most reliable experience, add Remindavo's caller number to your contacts and enable "Allow calls from favorites" in your phone's Focus or Do Not Disturb settings.
What countries does it support?
Remindavo supports phone call reminders in 50+ countries. Slack users are spread globally across teams in North America, Europe, Asia-Pacific, and more. You can verify coverage during the free 14-day trial — no credit card required.
Slack's strength is async communication — but meetings are synchronous, and they need a more reliable reminder than a notification that competes with everything else in your feed. A phone call that rings wherever you are is the most dependable way to make sure you show up. Set up Remindavo once and it handles the rest automatically.
Never miss a Slack meeting again.
Connect your calendar and Remindavo calls you before every meeting. Setup takes 60 seconds. Try it free for 14 days.
Start Free Trial