service · inferred from evidence
chat.postMessage
A Slack API method for posting messages to channels, DMs, or private groups.
- channel_not_found when posting to DM or private group with Slack Bolt
Calling `app.client.chat.postMessage` in a Bolt app with the channel ID of a direct message or private group returns `channel_not_found`, while posting to public channels the bot was invited to works fine. The bot user OAuth token is used.