Evri

I use Evri integration with Etsy and buy thousands of pounds worth of shipping with them every year as they give decently priced tracked shipping internationally that beats royal mails price.

But the bulk of my orders come through Shopify and it's such a shame the price they give when using their Shopify integration is way higher than royal mail and higher than if you did a single input of the parcel on the Evri website. Evri is missing out on a chunk or sales here.