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Turn Slack no-show updates into rebooking calls

A missed appointment in Slack can prompt a calm, consistent call to help the customer find another time.

Trigger

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

Action

Make a phone call from agent

Initiate calls

Why this helps

Rebooking follow-up is easy to postpone when the missed appointment is only noted in a team channel.

  • Give customers a prompt chance to reschedule.
  • Reduce the number of reminders your team must hold in mind.
  • Keep the follow-up approach consistent across missed appointments.

Setup

Build it in a few focused steps.

  • 1Connect Slack and Bolna to Notis once in the portal.
  • 2Create an automation or tell Notis to call customers when a missed appointment is shared in Slack.
  • 3Describe in one plain-language instruction how the agent should offer a rebooking conversation.
  • 4Choose Slack's Channel Message Received trigger and select a channel for run reports.
  • 5Test with one real no-show update and confirm the correct follow-up call is placed.

Questions about this workflow

Can the agent book a new time during the call?

The call follows the behavior and capabilities of your configured Bolna agent; describe the rebooking goal in the instruction.

How do I avoid calling for unrelated updates?

Tell Notis what a qualifying missed-appointment message looks like in the automation instruction.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Slack to Bolna. A trigger fires from one place; an action lands in another.

Slack triggers

Bolna actions

Recurring trigger

Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.

TriggerScheduled

Delete agent by id

Delete an agent

ActionInstant

Webhook trigger

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

TriggerInstant

Delete batch by id

Delete a batch

ActionInstant

New Channel Created Trigger

Triggered when a new channel is created in Slack.

TriggerInstant

Fetch all batches by agent id

List all batches for agent

ActionInstant

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

TriggerInstant

Get all agents

List all agents

ActionInstant

Direct Message Received

Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.

TriggerInstant

Get all phone numbers

List all phone numbers for your account

ActionInstant

Message Reaction Added

Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Get execution by id

Retrieve specific execution by `execution id`

ActionInstant

Message Reaction Removed

Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Make a phone call from agent

Initiate calls

ActionInstant

Reaction Added Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.

TriggerInstant

Retrieve agent by id

Retrieve an agent

ActionInstant

Connect any two apps with Notis in the middle.

Slack and Bolna, or any other combination from 1,000+ integrations.

When this happens · Trigger

Do this · Action

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