Salmon for outlook is on progress.
we are first doing a prototype which will use Mailjet for SMTP backend and tracking, the Outlook plugin will make it more convenient to track emails , and see if they have been opened or not.

That's why we are recommanding you are using the free account of Mailjet as soon as possible, as we will be able to get more data when you will have the plugin installed.

link to Mailjet : http://go.likr.it/mailjet