Need a email blast/enewsletter system:
1. able to insert and preview html coding.
2. able to track who opens, clicks and response..ect (view uploaded file)
3. easy input of email address.
4. front-end for client to login to see reports of their newsletter being blasted out.
5. admin login for webmaster to control the above functions.
6. easy integration for future mailing list, eg. if click to subscribe mailing list for website A, the database of this email system is able to retreive the emails addresses for people who subscribe to website A newsletter.