Example Slack bot Steps Create slack app Grant Permission Scopes Install App to slack workspace API Methods https://api.slack.com/methods/users.lookupByEmail https://api.slack.com/methods/chat.postMessage Slack Bot Permissions Scopes https://api.slack.com/scopes/chat:write https://api.slack.com/scopes/users:read https://api.slack.com/scopes/users:read.email