Integrations · Team comms
AI receptionist for Slack
The short answer
Yes. FirstVoice posts every call to the Slack channel you choose, with urgent calls flagged, so your team sees it straight away.
Last updated
Try it
See what arrives after every call.
The same call, delivered wherever your team already looks. You choose what's included.
Example call with a made-up caller.
# new-calls
FirstVoice just now
🔴 Urgent call: Leaking hot water cylinder
Caller: Sarah Mitchell · 021 ••• 4821
Booked: Thu 8:00am
Cylinder leaking into the laundry since this morning. Water turned off at the toby. Booked first job Thursday.
Then
Watch a call go into Slack.
Incoming call
Example caller · Mobile
An example call, sped up. Your setup follows your own questions and rules.
- A caller rings and FirstVoice handles the call
- When it ends, FirstVoice posts a message to your chosen Slack channel
- Urgent calls are clearly flagged
- The message shows the caller, the reason, any booking and a summary
- Your team can call back straight from the message
FirstVoice with Slack
Your team sees every call in Slack.
What happens on a call
- A caller rings and FirstVoice handles the call
- When it ends, FirstVoice posts a message to your chosen Slack channel
- Urgent calls are clearly flagged
- The message shows the caller, the reason, any booking and a summary
- Your team can call back straight from the message
Getting connected
- Someone in your Slack workspace adds FirstVoice and picks a channel. We walk you through it
- It works on free Slack, where it counts as one of your 10 apps
- We send a test call and check the message arrives
Nothing changes for your team
You keep Slack exactly as it is. Your team, your phone number and the way you work don't change. FirstVoice simply answers the calls you can't, and puts the results where you want them.
Technical details, for whoever looks after your software
FirstVoice with Slack
| Check availability during the call | No |
|---|---|
| Create bookings, jobs or leads | No |
| Recognise returning callers | No |
| Add call notes and summaries | Yes |
| Trigger follow-up texts or emails | No |
Slack connection details
| Category | Team comms |
|---|---|
| Markets | Global |
| API documentation | Public view docs |
| Auth | OAuth 2.0 |
| Access | Self-serve: you can create API credentials |
| Zapier | Yes |
| Make | Yes |
| Webhooks | Yes |
| FirstVoice plan | Growth or Scale |
| Checked | Against official Slack documentation, 17 September 2026 |
Slack app; chat:write; ~1 msg/s per channel
Slack questions
Does FirstVoice work with Slack?
Yes. FirstVoice posts every call to the Slack channel you choose, with urgent calls flagged, so your team sees it straight away.
Do I have to change anything in Slack?
No. We add one app that posts to a channel you choose. Keep caller details in a private channel.
Which plan includes Slack?
Growth ($597 a month) and Scale.
Slack is a trademark of its owner. FirstVoice isn't affiliated with Slack.
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