According to an article on Bitcoin Code Erfahrungsbericht, Brian Chesky, CEO and co-founder of Airbnb, was looking for a $150K investment to get Airbnb off the ground, all at a $1.5M valuation. That investment would have netted you a 10% stake in Airbnb, an incredible value, as it turns out.

Chesky shares these rejection emails, not to gloat, but to make this point:

Next time you have an idea and it gets rejected, I want you to think of these emails.