86% storage drop in Dataverse

Mysterious 86% storage drop in Dataverse? 🤔

My customer has a lot of Email. Since beginning of this month we see a big drop in Database storage.

Database storage - ActivityPointerBase table:
🔻From 186 GB to 26 GB (86% decrease)

File storage - New Email table:
🔹3 GB addition

Nice improvement!

Is Email moved from Database to File storage? Do you experience the same behavior?