You have two options for posting messages via your app - incoming webhooks and the chat.postMessage API method - each with a different level of complexity. We've written a set of guidelines on how your app can effectively communicate with the humans on your team. Overwhelming your colleagues with alerts is a sure-fire way to get your app uninstalled. Once your app is installed, configured, and built, notifications will simply start to appear for your users - they won’t have to set anything up to start receiving them.īecause notifications are an easy way to start posting in a workspace, it's important to make sure you're crafting the right notifications and sending them to the right place. These notifications also make an ideal starting point for your app because they're easily discoverable to everyone on your team. These can take the form of a simple heads up from another app or system, or they can be richly formatted messages that include images, additional contextual data, and interactive components like buttons or select menus.

The most common point to start building a Slack app is also one of the most straightforward - pushing messages into a workspace. These powerful building blocks for messages allow you to build complete workflows right inside Slack, that work just as well on our mobile devices as they do on your desktop, without any additional code or configuration. To create these types of messages, you’ll use a UI framework we call Block Kit. They can include rich formatting and even complex user interfaces. Messages don’t have to be just simple text notifications, though. The message is at the core of how you communicate in Slack and apps also use messages to interact with your team members.

Slack planning