I am sending an email from a specific address (i.e email@example.com) with a unique sender address to do bounce-tracking(link)(link2). The issue is that when the message is received in outlook it is diplayed as if sent by the bounce-tracking address (which is from a different domain, might be relevant?), displayed as from: "tracking_address@tracking_domain.com on behalf of firstname.lastname@example.org"
Is there a way to hide this irrelevant and confusing information from the user? gmail does not display it.