I have chatted with well over a thousand WhatsApp contacts and now need every one of those numbers extracted into a single Excel workbook. Some of the people are already in my phonebook while many remain unsaved, so the file has to make that distinction clear. • Structure: two dedicated columns—one headed “Saved Numbers” and the other “Unsaved Numbers”. • Extra details: for any entry where WhatsApp shows a name, include that name in a neighbouring cell, and add the date of our last message exchange so I can later sort by freshness. The method you use is up to you—browser automation on WhatsApp Web, a Python script hooking into the exported chat archive, or another safe tool—provided it does not jeopardise the account and delivers a clean, neatly formatted .xlsx file ready for filtering and analysis.