It sounds like you're referencing something along the lines of — possibly a creative project, a username, a brand, or a file/download name with “zip free” (meaning no ZIP compression or no cost).
The phrase "Sincerely Yours" serves a dual purpose: it’s a formal letter closing, implying intimacy and honesty, and it’s a statement of artistic intent. Fans describe the project as iamsu’s most vulnerable work to date. iamsu sincerely yours zip free