String the atoms together into molecules and inject them into messages and modals.| Slack API
Another way to attach content to messages is the old attachments system. We prefer Block Kit now.| Slack API
A comprehensive breakdown of blocks used to lay out app surfaces.| Slack API
A guide to using the mrkdwn syntax for your app-published text in messages, modals, and tabs.| Slack API
Your guide to unfurling link previews within messages.| Slack API