Follow up with event registrants from Slack
Turn each registration update into a timely welcome or confirmation call through your Bolna agent.
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
Event follow-up becomes a mental checklist when registration updates arrive across busy workdays.
- Give new registrants a consistent welcome touchpoint.
- Reduce manual coordination around confirmations.
- Keep attendee outreach moving as registrations arrive.
Setup
Build it in a few focused steps.
- 1Connect Slack and Bolna to Notis once in the portal.
- 2Create an automation or ask Notis to call when a new event registration is posted in Slack.
- 3Describe the registration criteria and welcome or confirmation goal in one instruction.
- 4Choose Slack's Channel Message Received trigger and a channel for run reports.
- 5Test with a real registration update and confirm the right call is made.
Questions about this workflow
Can it call only for a specific event?
Include the event or registration criteria in your instruction.
Can the agent answer attendee questions?
That depends on your Bolna agent configuration; define its role and limits in the 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.
Delete agent by id
Delete an agent
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Delete batch by id
Delete a batch
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Fetch all batches by agent id
List all batches for agent
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Get all agents
List all agents
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Get all phone numbers
List all phone numbers for your account
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Get execution by id
Retrieve specific execution by `execution id`
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Make a phone call from agent
Initiate calls
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Retrieve agent by id
Retrieve an agent
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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