Slack

Send messages to Slack users and channels through Sendivent.

Setup

Connect your Slack workspace to enable Slack notifications.

1. Go to Channels → Slack in your dashboard
2. Click Connect Slack
3. Authorize Sendivent in your Slack workspace

Sendivent requests the permissions it needs to send messages.

Identifiers

Send to Slack users (DMs) or channels:

Type	Format	Example
User (DM)	Member ID	U12345678
Channel	# + name	#engineering
Channel	Channel ID	C12345678

To DM a user, use their member ID (U...). Slack will automatically open a DM conversation.

Finding a user's Slack ID

1. Open Slack
2. Click on the user's profile picture
3. Click More (three dots)
4. Click Copy member ID

The ID looks like: U12345678

Sending to channels

Use the channel name with # prefix, or the channel ID. Public channels work immediately. For private channels, invite the app first.

Troubleshooting

Slack message not delivered

1. Check workspace connection in Channels → Slack
2. Verify app permissions in Channels → Slack
3. For private channels, invite the app with /invite @YourApp
4. Use member ID (U...) — find it via the user's profile (More → Copy member ID)

Channel not found

• Public channels: use #channel-name
• Private channels: app must be invited first
• Archived channels: cannot receive messages

See also

• Routing — Force Slack vs auto-routing
• Deliveries — Statuses and failure reasons
• Templates — Dynamic content