Well to start, as an email marketing industry veteran. The proper way to spell opt-in audience is with a hyphen, between opt and in . We kept it short, knowing how annoying it is, to type a hyphen in, when searching for something on a browser. Well your asking yourself,  what is an opt-in audience? An opt-in audience ,is an interested marketing audience. They are subscribers in our database, who have requested to receive offers and info from our network and company affiliates.They have given us permission through the double opt-in process, to send them offers. Opt-in email is in relation, just like direct mail, though this version appears in your e-mail box and is more cost efficient.

According to the latest research numbers, the permission based e-mail industry has grown from $170 MM (USD) in 1999 and is growing to $7.3B by 2005 . Double Opt-in permission based e-mail has also quickly moved from a textual format to one that is rich in multimedia content, via server-based streaming audio or video. our ad or message. The people on our lists, have specifically asked to be notified of offers, products, or services. Virtually anyone, even those with extremely low bandwidth, can now view this compelling content.