Slack offers several advanced features beyond its basic team chat capabilities, including reminders that allow users to remind themselves or their teams about specific messages, tasks, or channels. Setting up these reminders involves using the `/remind` slash command, which can be used to create personalized reminders for individuals or channel reminders to alert a group of people. Users can also view and edit their reminders in the "Later" tab, where they can check off completed reminders, snooze them, or edit them as needed. Additionally, Slack integrates with Zapier, allowing users to connect other apps and receive notifications about activities happening in those apps directly within Slack.