How works the SAP emailing service in Marketing?

Hi,

i was found a information about the emailing service in Sap Hybris Cloud for Customer.

I know how configurate the system and how work this.

but i need know if SAP send metatags embebed in the mails. Because if is this, some services same Google can block and put in the black list my mails. Only when i send a lot of messages.

Any one have the architecure for this service?

Thanks for your help.