Hello Suzanne,
Please may you clarify your requirement?
why don't you want to add your email address in Seed addresses list (nms:seedAddress) that are added automatically to all deliveries sent?
If you want to "automate" the filling of the Delivery target options (Seed address/ Adresses de contrôle), you should add them in the blank Delivery template in your nmsDeliveryModel (internal name) default folder.
If you proceed by duplicating older deliveraries that don't have such Seed addresses defined, you may add a typology rule to avoid sending deliveries with the expected Seed addresses filled.
Regards.
J-Serge