Sending emails to a 3rd party database through our own email system

We need to send out the survey link to a database of 10,000 emails through our own email system. We are looking for ways to identify which emails we have sent out have completed the survey. Is there a way to link the emails to the survey completed?

If you send out the same link to each respondent then there is no way for the system to distinguish source where user opens that link from.

So if you do have a database with 10.000 of emails, then prepare preloading file for 10.000 assignments in web mode. After prealoding you will be able to export file with unique link per respondent that you send out with your smtp service. In such was you will be able to trace which assignments are completed and which are not.