A mailing service places a limit of 30 in

I think I can help you with that!

A mailing service typically places a limit on the number of items that can be sent in a single package or shipment. This is often referred to as the "weight limit" or "package limit".

In your case, the mailing service has a limit of 30 items that can be sent in a single package or shipment. This means that if you try to send more than 30 items, you will need to split them into multiple packages or use a different shipping method.

Is there anything else you'd like to know about mailing services or shipping limits?