German to English Marketing Printing & Publishing financial products

This text is aimed at companies who are being invited to sponsor a book project as part of a campaign to promote German companies abroad. There is a list of possible sponsorship components. These include:

"- Integration eines themenrelevanten Vorwortes, Fachbeitrags oder Aufsatzes in Absprache mit der Redaktion (***Absendersponsoring***)
- Redaktionelle und inhaltliche Gestaltung eines Sonderkapitels für den Hauptteil des Buchs, welches eine themenrelevante Studie beinhaltet (***Absendersponsoring*** in Absprache mit der Chefredaktion)"

Can anyone help with a translation of "Absendersponsoring". Is it simply "sender sponsoring" or is there another technical term in English?

Many thanks.