Apptoto sends the reminders and collects the answers. FlowMattic passes those answers to Slack: who is not coming, who needs a new time, who replied to a text and which reminder never arrived. Front desks, clinics and service teams see the change in the channel they already watch, and the workflow runs on your WordPress site.
20 triggers 14 actions 6 example workflows 2 ready-made templates Unlimited runs
When this happens in Apptoto20 triggers
Do this in Slack14 actions
1. TriggerParticipant Not Coming2. ActionSend Channel MessageWhen Apptoto fires Participant Not Coming, FlowMattic runs Send Channel Message in Slack with the data from that event.
You build this in the FlowMattic workflow builder on your own site. See the setup steps
Each one uses only triggers and actions the two integrations ship today, plus FlowMattic's own tools. Where the library has a ready-made template, import it instead of building from scratch.
Ready-made templateA cancelled slot is only worth something while there is time to fill it. The channel post names the client and the appointment so someone can offer the gap to the waiting list.
Participant Not ComingSend Channel Message
View the template When a client taps that they need another time, Slack adds a reminder for the scheduler with the client's name and phone, so the request does not wait until someone checks the Apptoto dashboard.
Participant Needs To RescheduleAdd Reminder
An AI Agent reads each reply and labels it as a question, a running-late note or a thank you. A Router posts questions to the front desk channel and lets the rest go to a quieter log.
Participant Replied To MessageAI AgentRouterSend Channel Message
A reminder that bounced is a likely no-show. The admin channel gets the participant and the failed message, so staff can phone the client or fix a wrong number before the day.
Message FailedSend Private Channel Message
Date/Time Formatter turns the appointment time into a plain local date and hour, so the confirmation list in Slack reads the way the team talks about the diary.
Participant ConfirmedDate/Time FormatterSend Channel Message
A participant added to the stop list will not get reminders any more. A direct message to the office manager is the cue to switch that client to calls or email.
Participant Added To Stop ListFind User by EmailSend Direct Message
At the end, every participant who says they are not coming is posted to your front desk channel with the appointment details.
Under Connects in FlowMattic, add a Slack connection with an account that belongs to the front desk channel.
Create a workflow with the Apptoto Participant Not Coming trigger and follow its instructions to send Apptoto events to the workflow.
Book a test appointment for yourself and answer the reminder with not coming, so FlowMattic captures the participant and appointment fields.
Add Send Channel Message, pick the channel and write the text from the client name, appointment title and time. Test the step and switch the workflow on.
1. Trigger in Apptoto
Participant Not Coming
2. Action in Slack
Send Channel Message
Fields mapped from the earlier steps (a typical setup)
| From Apptoto | To Slack |
|---|---|
| Participant name | Message: client |
| Participant phone | Message: call back on |
| Appointment title | Message: service |
| Appointment start time | Message: slot |
A trigger starts a workflow. An action is something FlowMattic does in the app as a step.
Apptoto and Slack connect through FlowMattic on your own site, with no separate automation account in the middle and no charge per run.
Cancellations and reschedule requests land where the front desk already works, which gives them the best chance to rebook the time.
Texts sent back to a reminder reach a person in Slack instead of waiting in the Apptoto inbox until the end of the day.
FlowMattic runs on your own WordPress site with unlimited runs, so a practice with hundreds of reminders a week pays nothing extra per alert.
Use the Participant Not Coming trigger for clients who decline, or Participant Canceled Booking for cancelled bookings, then add Send Channel Message. Map the client and the appointment time into the text and switch the workflow on.
Yes, if the appointment data includes their email. Add Find User by Email with that address and then Send Direct Message to the user it returns.
Only the fields you map are posted. If the message includes phone numbers or appointment reasons, send it with Send Private Channel Message to a channel limited to the front desk.
Yes. Booking Request Completed fires when a client finishes booking. Post it to a bookings channel, with Date/Time Formatter to show the slot in your local time.
No. Runs are unlimited on every FlowMattic plan and happen on your own server, so the number of Apptoto events does not change the price.
Did not find your answer? You can browse the help center or ask us directly.
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30-day money-back guarantee Unlimited workflows and runs Self-hosted
Reviewed 27 Oct 2026. The example workflows are written with AI from the real triggers and actions of both integrations and checked against them. Apptoto integration 1.0.0, Slack integration 1.0.
