Outbound is the primary way I help clients sell their domain names. Often times the best buyer for a domain is not someone who woke up with the express intention of buying the URL. It's not until the relevant parties are informed of its availability that the offers start rolling in. I can't tell you how many time I've marketed a domain to a company and 6 months later the qualified offers start. During that time it's common I've spoke with a contact who pushed the information to a weekly committee's meeting, who moved it to their monthly agenda, who then pushed it to the quarterly marketing strategy budget, and so on. If it wasn't for the consistent follow up and timing, deals would have never come to fruition. A big part of this is also the assurance of the offer. If you own say insurance.com, you better believe every single insurance agency is going to get a call, and several at that. You'll know who said no, yes, maybe, and what their offers are. So when you make a decision to sell a domain, you'll know that you're getting the best offer the market can provide.