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Send Channel Message.

Post a message to a channel the connected Slack app can access. Boundry maps the action's text from earlier workflow steps, sends it to Slack, and records Slack's response on the run.

Open workflow builderUse the email template

Fields to configure

Select a tested Slack connection on the action step. The action sends the mapped message to the chosen channel when its trigger runs.

ChannelRequired
Select a channel visible to the connected Slack app. The app must be able to post in that channel.
Message textRequired
Write the message and insert values such as {{trigger.from}} or {{trigger.subject}} from the event.
Unfurl linksOptional · off by default
Turn on only when you want Slack to show previews for links in the message.

Build and test the action

Use controlled input before enabling a sequence that can post to a shared channel.

  1. Connect the Slack workspace to the selected Boundry project and test the connection.
  2. Create a sequence with an available trigger, then add Slack → Send Channel Message.
  3. Select the Slack connection and a channel the app can post to.
  4. Map the message text, test the action with controlled input, inspect the returned channel and timestamp, then enable the sequence.

A working template

Show the sender and subject in the channel, then let a person open the original in Boundry.

New inbox message → Slack alert

Boundry / New Email (email.received)Slack / Send Channel Message (send_channel_message)

Slack action fields

Channel
Your connected support channelThe Slack app must be allowed to post there.
Message text
New email from {{trigger.from}} Subject: {{trigger.subject}}Uses fields emitted by New Email; omits the body by default.
Unfurl links
OffAvoids extra link previews in the channel.

See the full trigger and action template

Check the result and data path

A successful action returns Slack's channel ID and message timestamp to the Boundry run. If it fails, inspect the step error and check the Slack connection, channel access, and app permissions. The mapped message text leaves the project's regional workflow plane when Slack receives it.

Explore all Slack actions