We've rounded up 4 unique methods for writing proposal submission emails. Plus, we've got email samples for each method.In this blog, you will find best practices for crafting effective proposals for email submission, along with 4 methods and 5 Samples. In the introduction, briefly state who you are and why you're writing. Make sure to mention anything relevant to the recipient. A proposal letter isn't just a summary of your full proposal. It's a persuasive introductory document meant to intrigue a reader enough to find out more. We've collected the top 10 proposal email templates you need to know. Use our Business Proposal to secure potential clients, outline value proposition, and convince a company to enter a business relationship with you. To write a proposal letter, follow these simple steps.