I have been using Postshipper for quite some time. Overall I am very happy with their service, their only issue is the custom charges that I have to pay by cash when they deliver the shipment. I like to pay everything online for convenience, but sadly there isn’t an option where I can pay everything online right now. They should add paying custom charges online, because sometimes they arrive and I don’t have cash at home. During the corona crisis, I think Postshipper is the best company in terms of speed. Posta Plus Mybox became extremely slow that I reduced my shipments with them by 80%. I have a shipment very soon with Posta Plus, so lets see if there are any improvements with the speed.
Update: Things have slowed down a lot since I wrote the article, so check out the latest update