You run a real estate brokerage, so your attention should only be directed to value-adding tasks. As such, you cannot keep an eye out on new application forms and contact all candidates in due time. But if you use automation, you can remove this task from your to-do list.
An automation tool, like Zapier, allows you to connect your form application to your email application. As such, with each new form entry, you can schedule an automated email message that warms up the candidates, informs them that their application was well-received, and provides an overview of the next steps.