We have used Interparcel for about 5 years, almost always UPS. Very few problems during that time, and when there are problems, customer services are accessible and responsive. So I have no reservations about Interparcel/UPS per se. I do agree with the other reviewers though who have had bad experiences when trying other (cheaper) services offered through Interparcel. That is the only reason why I give 4 stars rather than 5. Interparcel list them, so they have to take a degree of responsibility for their "service". These cheaper couriers are generally as consistently bad, as UPS are consistently good. You tend to get what you pay for in this market.