Dear Laetizia,
I am not sure which platform you are using to send or push email campaign to target audience.
Suppose, if you are using Adobe Campaign as a email platform, then the entire process would be very simple,
1) First you should be sync with Marketing Cloud for both Adobe Analytics and Adobe Campaign.
2) Enable the Adobe Camapign Reporting location from Analytics > Admin > Report Suites > <select report suite> > Edit Settings > Adobe Campaign > Adobe Campaign Reporting > Enable Campaign Reporting.
3) While sending email via Adobe Campaign platform you can able to see the Opens, Click, Bounce along with other metrics from Adobe Analytics reporting.
For your reference, kindly fine the below link and let me know if this is what you are looking for?
Adobe Campaign Reporting
Thanks,
Vijay