This is a good thought but only if the company allows you to generate a throwaway email, or designates a single email for this purpose that potentially forwards

This is a good thought but only if the company allows you to generate a throwaway email, or designates a single email for this purpose that potentially forwards to HR (to verify the employment). Otherwise this puts a massive target on linkedin back for a data breach and opens individual work emails to spam. Both would be nasty for credential harvesting (email username) and spear phishing. The single HR email seems like the best option since they would be able to retroactively confirm employment even if you've left.