Slack booking alerts and reminders: Caletus + Slack
Get Caletus booking alerts, meeting reminders and a daily summary in Slack. They arrive in the Caletus app's Messages tab, and you can also post booking updates to a team channel.
What Caletus does with Slack.
- Messages you in Slack when someone books, reschedules or cancels, including the cancellation reason
- Reminds you 5, 10, 15, 30 or 60 minutes before each meeting, with Join, Reschedule and Cancel buttons
- Sends a daily summary of your meetings at the hour you pick, in your own time zone
- Posts booking updates to a public or private channel too, if you turn it on
- Lists your upcoming meetings with /upsynk meetings and your booking links with /upsynk events
How to connect Slack to Caletus.
- A Slack workspace you can add the Caletus app to.
- The same email address in Slack and Caletus, so Caletus can find you to send messages and answer /upsynk.
- 1
Open Integrations
In the Caletus sidebar, click Integrations. Find the Slack card under Messaging & email and click 'Connect'. - 2
Allow access in Slack
Approve the Caletus app in the Slack pop-up. A welcome message then arrives in the app's Messages tab. - 3
Pick what you get
Click the Slack card again to open Slack settings. Choose booking updates, reminder time, daily summary hour and an optional channel, then click 'Save'.
What Caletus can access in Slack
Caletus installs as a Slack bot through OAuth and never asks for user tokens. The bot token is encrypted before it's stored and never logged, and every request from Slack is checked against Slack's signature.- chat:write (send booking alerts, reminders and daily summaries)
- chat:write.public (post to a public channel you pick without inviting the app first)
- commands (run the /upsynk slash command)
- users:read (look up Slack members to message)
- users:read.email (match your Slack account to your Caletus email)
- im:write (open a direct message with you in the Caletus app)
- channels:read (list public channels in the channel picker)
- groups:read (list private channels the app has been invited to)
Slack limits and quick fixes.
- Reminders and the daily summary only go to you in the Caletus app, never to a channel.
- Private channels only appear in the channel list after you invite the app to them.
- /upsynk meetings shows up to 10 upcoming meetings, and /upsynk events up to 20 event types.
- No daily summary is sent on days without meetings.
- The app isn't a member of that channel. Type /invite @Caletus in the channel in Slack, or pick another channel in Slack settings.
- Uninstalling the app or revoking its token disconnects Caletus. Click the Slack card on the Integrations page and choose 'Reconnect Slack'.
- Caletus matches you by email. Sign in to Caletus with the same email your Slack profile uses, and make sure Slack is connected in that Caletus workspace.
Slack integration FAQs.
Common questions about using Slack with Caletus.
Talk it through with our teamYes. Connect Slack from the Integrations page and Caletus messages you in the Caletus app whenever a meeting is booked, rescheduled or cancelled. You can post the same updates to a team channel too. Each type of update has its own on/off switch.
No. Notifications go to the Caletus app's Messages tab in Slack, just for you. Posting to a channel is optional: turn on 'Also post to a channel' in Slack settings and pick one. Private channels need the app invited first.
Yes. Caletus sends a Slack reminder 15 minutes before each meeting by default, and you can change it to 5, 10, 30 or 60 minutes. The reminder has the join link plus Reschedule and Cancel buttons. You can also get a daily summary at an hour you choose.
Set up Slack in a few clicks.
Start free, connect your calendar, and turn on this integration in Settings when you're ready. No credit card needed.
- No credit card required
- Two-way calendar sync
- Set up in under 2 minutes