Is it possible to integrate different email adresses for different forms?

Are you saying you want to combine the email form fields submissions of the different forms into 1 file? This is possible with the use of Combine Submissions App. This app can combine the data submissions of the chosen form fields into 1 CSV file.

If you are asking if you can change the email recipient then the answer is yes. Please check this guide: How-to-Find-and-Change-the-Email-Address-Used-for-Notification-Email 

If this is not what you need, please provide more information about the issue so that we can assist you much better. Thank you.