when I delete an entry in my emClient Calendar from the past, every one that was part of this entry (emailaddress) gets a notification. Is there a way to turn this off?
For clarification: I just want to deactivate this for past events not for the ones in the future.
It is by design so when you remove a meeting the participants are informed. However, you should get a popup asking if you want to send the cancellation.
If you don’t, you may have disabled it. Go to Menu > Settings > Calendar > Invitations, and make sure that the invitation sending behaviour is set to Always ask. Then click on Save & Close.