HubSpot form submissions can be connected with Slack notifications using Zapier's automated workflows, allowing for prompt responses to new leads and streamlined marketing workflows. With a Zap, you can automatically send a Slack notification whenever a new form is submitted on HubSpot, ensuring every submission is immediately on your team's radar. This integration enables full potential of lead management process by providing real-time updates to the team. The process involves setting up a trigger in HubSpot and an action in Slack, customizing the message with data from HubSpot, and testing the Zap to ensure everything is set up as desired.