| Symptom or message | Cause and fix |
|---|---|
| Send test works but real alerts do not come | The channel does not have that event ticked, or the same problem was already sent in the last 6 hours. Check the events listed under the channel's name. |
| Slack refused the message (404/403…) | The webhook was revoked or the app removed. Create a new webhook and re-add the channel. |
| Teams refused the message | The Workflow was turned off or deleted. Re-create it and re-add the channel. |
| The Slack / Teams webhook URL isn't valid. | Paste the full URL you were given. |
| That's enough test messages for this hour. | You can send 10 tests an hour. |
| This channel type is no longer supported. Remove it and add another. | An older kind of channel (before email was delivered directly). Remove it and add Email, Slack or Teams. |
| You can have up to 20 channels. | Remove one you do not use. |
| Choose at least one event. / Give the channel a name. | Fill in the form. |
| You cannot find the Alerts page | It needs the Manage alerts permission (managing users includes it). Ask an admin. |
More than 30 messages in an hour for a workspace are dropped to protect your channel. They are still visible in History and on the Dashboard.
Read next
- Alerts: what they are and what triggers them Get a message in Slack, Teams or your inbox when a post fails, a login ends, a platform hits a limit, and more.
- Send alerts to Slack Create a Slack incoming webhook and add it as a channel.
- Send alerts to Microsoft Teams Create a Teams Workflow webhook and add it as a channel.
- Send alerts to your email Receive alerts at the address on your account. There is nothing to confirm.
