Ask Why do some clients ask for a detailed proposal and then go quiet the moment you send it?

[Edward22]

Putting together a detailed proposal takes real time and effort, especially when a client asks for pricing, timelines, and a full plan of action. So when the response after sending it is complete silence, it can feel confusing and a little disrespectful. Some clients may have already made a decision before reaching out, using proposals to compare prices or get ideas for free. Has this happened to you, and do you think there is a way to tell early when a client is not serious?