I was wondering if its possible to put an array as a value in a key...example
With ConfigurationManager.AppSettings
you can only retrieve scalar values. For your example, if you seperate your emails with a semicolon, you can do:
string[] emails = ConfigurationManager.AppSettings["email"].Split(';');
with the web.config
<add key="email" value="email1@email.com;email2@email.com" />