CA-JOB
                
                   226 Points
                   Joined July 2021
                
               
			  
			  
             
            
             I guess your concern is that you are unable to claim the Input of GST charged by the courier agency because you are supplying exempted goods, so you want to recover the GST from your customer.
 I think you can show shipping charges(what you incurred + plus GST charged by courier agency) in your invoice as shipping charge and show it as part of invoice value and as per the concept of composite supply whole amount will be exempted from GST.