How To Write An Email To A Company For Cooperation. Follow these steps to write a successful partnership email: You have to grab your reader’s attention by providing a killer headline.

Check out our free sample of a business partnership proposal letter that you can customize to draft a convincing and comprehensive letter. Start your email with an appealing subject line and formal greetings to the company. A few of the common reasons why cooperation agreements are terminated include the retirement of a partner, the death of a partner, and bankruptcy.