I installed Microsoft Marketing for the purpose of testing in our dev environment. My first irritation was the need of a separate portal just for marketing. I had to reset my customer self service portal just for marketing (fairly annoying). I have heard that this will change later this April, so hoping for the good news:)
PS! I also had to install VOC and I can’t really understand why I have to install this!
ANYWAY. If you wonder what the uninstall button does, here you go!

I started off opening the email I got when I installed the Dynamics 365 for Marketing and clicked the bottom link, and then “uninstall marketing from this org”.




Well that is nice. It all took about 2 minutes. Could it be true that it was that easy?
NO (lol)
30 ish solutions and 1 portal reset later I was almost there!




Thank you VOC for creating dependencies that I simply can’t find.. Supportcase created.

Conclusion
This was far from smooth. Uninstalling the solutions way to long because Dynamics kept freezing (probably because of database locks).
Worst of all was probably that Voice Of Customer was installed and I can’t remove it without a support case.
Update:
Support called, and they found a dependency in the App for VOC that did not uninstall correctly. If you go into the default solution, and then remove the app step by step you can finally delete the VOC solution! For me that meant doing the ribbon first. Then the entities in the app, and finally the app. All the while publishing changes.