Duosuma: Request an Account What is Duosuma? Duosuma is Duotrope's Submission Manager. It helps publishers and agents receive and manage their submissions quickly, easily, and affordably. Learn more. Publisher: The Dark Horse Authorization: I am the owner of The Dark Horse and am authorized to request this account. Important Note: The person who creates the account is designated as the account's "owner" and will have complete administrative control over it. The owner is legally and financially responsible for the account. Also, the "account owner" role should not be given to a short-term member of the staff (such as a student editor). Please make sure the appropriate person makes the request. Your Full Name: Note: This must be your full legal name, not the title of the project or a job title such as "Administrator." Your Email: Note: For your security, we will email the address we have on record for The Dark Horse.Please provide an address below in case we have trouble contacting you at the address on record.