Sending Messages

The message composer at the bottom of every conversation handles text, file attachments, mentions, voice input, and audience mode.

Text Input

Click into the composer and start typing. The input expands as needed for longer messages.

Current message composer showing the attachment button, Everyone audience selector, voice input, and send button

Drafts are saved per conversation. If you switch channels and come back, your unsent text is still there.

Attachments

Click the + button to open the attachment menu, or drag and drop files directly into the conversation.

Accepted file types include images, PDFs, plain text, and Word documents (.doc and .docx). Thumbnails appear inline before you send so you can confirm the right files are attached.

For a first-use screenshot of the attachment menu, see Your First Channel.

Voice Input

Click the microphone button to record a voice note. The app transcribes your speech into text using the language configured in your settings. This is useful for quick messages when typing is not convenient.

@Mentions

Type @ in the input field to open the mention picker.

Depending on the conversation and available context, the picker can include:

  • People in your workspace or channel.
  • Specialists that can respond in the conversation.
  • Channels you can reference.
  • Files and folders when file context is available.

Mention a person to get their attention. Mention a specialist when you want a specific AI agent to respond. See Working with Specialists for details.

Reactions

Hover over a message to reveal quick actions, including reactions. Click a reaction to add it. Click the same reaction again to remove it.

Reactions are visible to everyone in the conversation and show a count when multiple people react.

Message Actions

Hover over a message to reveal its action toolbar. Available actions depend on the message type and your permissions, but can include:

  • Reply in thread to start a focused side conversation.
  • Copy to copy message text or a link.
  • Edit for messages you sent.
  • Delete for messages you are allowed to remove.

For thread behavior, see Threads.

AI Feedback

When a specialist sends a response, feedback controls can appear on the message. Use them to help evaluate whether the response was useful.

Composer Mode

The audience selector controls whether your message can trigger specialist responses.

  • Everyone is the default. Your message goes to the channel, and specialists may respond when mentioned or routed.
  • Humans Only sends the message to people only. Specialists stay quiet unless you explicitly mention one with @.

A banner appears above the input while Humans Only mode is active. Toggle modes by clicking the audience pill, or press Cmd+. on macOS or Ctrl+. on Windows/Linux while focused in the text field.

For a first-use screenshot of Humans Only mode, see Your First Channel.

What to Explore Next

  • Threads. Learn how to use side conversations for focused discussions.
  • Working with Specialists. Understand how specialist responses appear and how to interact with them.
  • Your First Channel. A guided onboarding flow for sending your first message.