I would like to send an email every week to the new subscribers to my newsletter.
I want to use an automation and I am a bit lost between "data filter", "data filtered extension" and "filter".
What I have done so far :
In the step 1 of my automation, I have put an SQL query which update a data extension with all the newsletter subscribers.
What I want to do next :
In step 2, I want to filter on the newly subscribers AND to exclude those who might have already received the email.
To do so, I want to use a filter. But I want to be able to see somewhere (in a data extension) how many people will receive the email.
Can you help me, please ? Thank you for your help.