RMA - How do I know if my customer used the return label?

[LizHilton]

I need a list of RMA labels which were never used by my customers. I do free size exchanged and since my product is for babies, it is time sensitive. I ship out the new size asap and trust the customer will do the right thing and ship back the original. 

I need an easy way of checking this. 

[Wellife]

I asked the same question this morning and this was the response from SS: 

"I just received confirmation that we do not have a section in Shipstation that shows unused labels but you can see all of your returns under the shipments tab and click returns to the left. But there isn't a section specific to what you are asking for. Please use our community feedback forum to express why this would be helpful:  https://community.shipstation.com"

Unfortunately, you have to go through each one individually.