Hello there!
I'm extremely pleased to have the privilege of having you read over my proposal, it'll be worth your time.
Your product, GagaPit, is groundbreaking in the games industry and it would be an honor to help you in creating content as well as marketing the GagaPit.
I have experience in content creation and content marketing so my work will help boost sales for your product.
I guarantee swift delivery and exceptional quality
I'm looking forward to hearing from you soon to work together on this project
Take care
James