Is the Queery Letter a Viable Way to Get a Manager's Attention?

Is the queery letter a viable way to get a manager's attention, just like cold sending a letter with a short bio and some information about maybe contests you've won? It depends on the manager, frantly, and what's going on in their career, and how busy they are. They'll probably not even paing atention your letters. Riht, if things are all te quieter, then they might say, and they are going to give thus to read.