A joint marketing agreement is a legal contract that governs the relationship between two or more companies to collaborate in advertising, promotion and sales. "Explore our page detailing the essentials of a Joint Venture Agreement, a pivotal contract for parties looking to embark on a shared business venture.Joint marketing agreements are contracts that allow companies to market for each other and share audiences. Learn how to manage these agreements. The agreement is as follows: 1. This joint marketing agreement template will help establish a formal relationship between two parties who wish to engage in joint marketing efforts. Download Utah Affiliate Agreement template, modify and send for signing using BoloForms Signature.