Every card is a small discussion space: it is where you talk things through and gather everything related to the task, all in one place.

Comments

• Ask a question or share information right on the card concerned.
• Mention a colleague with @their-name to alert them.
• The full history stays available: past decisions are easy to find again.

Attachments

• Add a file from your computer, Google Drive or Dropbox.
• Paste a link to a document or a mock-up.

The result: the context of a task (discussions, documents, decisions) no longer scatters across your inbox.

Key takeaway: comment on the card rather than by email: the information stays attached to the right task.