I currently have an asp.net app that allows users to select an email template, upload a list of customer id's, select a specific send date and then send the email from exacttarget. I create a list of subscribers and a send object and it seems to work fine.
The requirement now is to change to using data extensions to send emails.
Firstly, is it possible to use the send object with data extensions or do I have to create an EmailSendDefinition?
There will be one data extension that contains all customer ids and attributes but when a user wants to send an email, I only want to send to the customer ids that the user requires. What is the best way to do this? Use a query activity? A filter definition? In the documentation for a filter definition there is no "Exists In" for a numeric value which seems the easiest way to achieve the required result...