Email System Development

Utilizing a Yahoo Clone Email script and open software encryption script create a Yahoo style website that offers the user a one button click encryption for email... The email is sent to a user who MUST also be on the mail system, where it is un-encrypted with one click... AND the email is archived in encrypted format permanently. The email system must also be designed to allow the individual users to establish a database of email addresses... ANY email directed to the users box is rejected unless the incoming email address is established in the receiving email users database... Sending users will receive notification that the receiver has received and read the senders email... When users sign onto there private email box Last SIgn-on Date will be displayed....and updated each subsequent visit... The vast majority of the software will be provided.. we are looking for modifications to meet the above specs... we are currently evaluating several packages for both the mail system and the encryption routines.. User documentation and help systems must be provided... Graphics will be required.. Long term support will be a must... Basically a turn key project...