You have defined in your Cloud for Customer test tenant, that all e-mails of the system should be sent to a single address, via the Activity E-mail and Fax Settings, in Business Configuration.
However, you notice that, for the Feeds related e-mails, these are still sent to the recipients determined in the feeds settings.
SAP Cloud for Customer
This is the system expected behavior.
The Feeds functionality does not consider the setting maintained in the E-mail and Fax Settings activity.
In case it is required to deactivate the e-mails, in the test tenant, you can switch off the e-mails completely via the feeds settings.
Feeds, Feeds E-mails, E-mails, E-mail and Fax, E-mail and Fax Settings, Activity, BC, Service, C4C, , KBA , SRD-CC-FED , Feeds , How To