You can get notifications in Slack every time you deploy a site on Netlify, including information about the deployed site, production URL, build log, and when the message was sent. There are three types of messages you can receive for deployed sites: before building, after deployment is complete, and if something goes wrong during deployment. Additionally, form submission notifications are available if you use Netlify forms, with each field separated in the message to ensure clarity. Configuring Slack notifications on Netlify is straightforward, and can be enabled through the documentation.