What is the right way to reject them? Do I need to send them a formal rejection letter or just an email?How do I refuse a rental application in California? Throw it away and go somewhere else. After screening prospective tenants and making a selection, am I obligated to let the applicants who did NOT get approved know why they didn't make it? A tenant cannot be rejected simply because of their race, creed or colour. A tenant can be rejected for the following: poor credit; no credit. Download a customizable rental application rejection letter template for landlords or property managers to professionally notify applicants.