> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/build/slack.md).

# Send a Slack message in Duaer

In Duaer, Slack defaults to Authentication Access Token, Resource Message, and Operation Send. Message Type defaults to Simple Text Message.
## Post to a channel

1. Create a slackApi (Access Token) or OAuth2 credential.
2. Search for Slack and connect it after the previous node. Leave Authentication on Access Token (or switch to OAuth2) and select the credential.
3. Leave Resource on Message and Operation on Send.
4. Under Send Message To, choose Channel, then pick or enter the channel.
5. Leave Message Type on Simple Text Message and set Message Text. Select Execute step.

Operation can also be Send and Wait for Response, which pauses until someone replies.

For other notifications, see [Send a Telegram message in Duaer](/build/telegram.md) and [Send mail with Send Email in Duaer](/build/send-email.md).
## Questions

### Which Slack authentication does Duaer default to?

Authentication defaults to Access Token (slackApi credential). You can switch to OAuth2 (slackOAuth2Api).

## Related

- [Send a Telegram message in Duaer](https://doc.duaer.com/build/telegram.md)
- [Send an SMS with Twilio in Duaer](https://doc.duaer.com/build/twilio.md)
- [Send a Discord message in Duaer](https://doc.duaer.com/build/discord.md)