The consumer database on this page averages about 288 million records and 100% of the full records have full opt-in email data criteria with 23 basic columns of demographics per data record. Furthermore over 70 additional categories of "Interests" can be queried and downloaded based upon the type of website that the data recorded opted into.
Our Other Consumer Database also has tens of millions of full opt-in emails and 213 Demographic Interests to select data from within its almost 200 million consumer records. You can specify that all records queried from that database must have opt-in email addresses. That consumer database is also a recently updated postal and phone database. Take me there!