[jbchoo]

Great idea. Partnership/sales agreement. Thanks for sharing.

One part of me finds it hard to establish trust, not to mention make deal, with people using public email domains like @gmail.com @hotmail.com etc...

[pedalpete]

I wouldn't worry too much about the public email. There are a few reasons people do this. Sometimes companies do this to appear smaller than they actually are, sometimes, people are investigating on behalf of another business, sometimes they have businesses and forward their email to their personal, etc. etc.