Ask for a Client Testimonial or Case Study

Act as a client relationship and business development coach. I want to ask my satisfied client [CLIENT_NAME] for a testimonial or permission to write a case study. The project we completed was [PROJECT_DESCRIPTION] and the result was [PROJECT_RESULT]. Write a request message that: acknowledges the positive outcome warmly, makes the ask feel low-effort for them, gives them a choice of format (written quote, video, case study participation), and explains briefly how I will use it. Warm and appreciative — under 150 words. Include a follow-up if they do not respond in 5 days.