Large companies do not generally innovate. Their internal inertia prevents them from successfully creating new things. Also the larger a company gets, the more layers of brainless MBA parasites latch on to suck them dry.
Large companies rely on purchasing innovation by buying up a never ending stream of smaller companies. They then take the ideas/products and launch them to a wider market.
Steam has remained small by rejecting massive buyout offers. This has allowed them to remain innovative.
Write a series of single query per e-mail.
Set then up on delayed delivery every hour through their workday.
It only takes once or twice until people read your entire e-mails.