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Go to "Your Apps" page at https://api.slack.com/apps
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Click on "Create New App" button
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On the modal, click on "From scratch" to create a new app from scratch
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In the "App Name" you can put any name in your app and in "Pick a workspace to develop your app in:" choose a workspace were you want to receive the messages.
- Go to "Incoming Webhooks" and enabled it.
- Go to bottom and click on "Add New Webhook to Workspace"
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Grant access to the workspace and select the channel that you want receive the messages. Here you can select yourself.
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Now, you can use the hook url in your app to send messages to yourself 🚀
This hook was already removed so, don't even try to use it 😛