I have created a new custom schema to store data and send emails. It is a different audience than our Recipients database so they cannot be mixed.
How can I send proofs to check the dynamic content is ok and to check that the images and texts are rendered ok?
I can only see lists, recipients and seeds and all are related to the Recipients schema.
You can send Deliveries and Proofs to records/recipients of a Custom Schema by creating a Target Mapping under Administration -> Campaign Management -> Target mappings.
Once the Target Mapping has been created, you could define filter conditions to target specific recipients for Delivery as well as Proof.
The 'Definition of a specific proof target' will allow you to define filter conditions and select the desired recipients from your Target Mapping.