Make the first sentence usable
Lead with the reason for writing so the recipient does not have to decode a long emotional introduction. For a message about how to follow up with a client who ghosted you, use this factual base: identify the brief, deliverable, rights, fee, revision history, and contract term that applies.
Reduce the work of responding
Offer simple options, a narrow question, or a clear update that can be understood without another conversation. State what you can deliver next, what approval or payment is required, and when the offer expires. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Respect the boundary already visible
Do not release rights or final files beyond the agreement, and do not shame a client publicly. Use platform support, legal advice, or a formal takedown process for fraud, infringement, threats, or identity misuse. A block, explicit refusal, legal restriction, or safety plan takes priority over the desire to explain more.