I  have been using Happy Post for over 4 years to send my packages worldwide. Their rates are much lower than competitors.

The service is very reliable, though the delivery times are a bit longer.

  https://happy-post.com/en/      All the answers to your questions can be found at the link.

I use the French Post for Europe and France.

Any excess transport costs will be reimbursed.

I pay close attention to the packaging.   I regularly update you on the status of your package.