Create a Online Newsletter-System with password protected access.

Create an Online Newsletter-System for us. We want to send out Newsletters to our costumers. • System need to be installed online on a Website (Password protected access, only for internal users with password can access). Need to be 100% online, no offline database. • We need different databases, wich we can chose for sending. Database 1; Database 2; Database 3; or even all of them at the same time. • People which dont want to reveive future e-mails need to delete themself from the mailing list by link. • We need to login to the system and send E-Mail Newsletter in Text or HTML. • We need to import different Databases with E-Mail Adresses automatically. • All E-Mail must be delivered; no e-mail need to be known as spam!!!! Very important. • We need to change Name and E-Mail address of the sender easy (to a gmail account or something), if we want to change it. • Need to be a simple system!