As we agreed:
Reads IMAP mailbox content. Puts e-mails into categories. Prepares answer e-mails based on temple e-mails. User can add further text to the message before sending it. System shows all related e-mails. One order related messages can be deleted by one click from inbox and sent items too.
And some more earlier agreed features. The completely new ideas will be paid by bonus or in a new project.