Hi,
You can use segments to accomplish this. Segments ar part of the Enterprise version.
You have two options to use it. Either duplicate your email and add the segment, or add the segment to the original email and send it to your segment. If you choose the latter, please note that Acymailoing will not send an email twice to the same user by default. On the Summary page of the send process you will be asked if it has to send the email to all users or only new user. In this case you choose to send it to all users.
