Avoid this courier
First delivery with SF express, very bad experience. The courier has had my package for over a day and has not attempted to deliver it. I tried contacting customer service but after 30 minutes waiting they just hung up on me. Very disappointed! Edit (2021): I've increased from 1 to 2 stars based upon a recent delivery experience, in this case the delivery experience was good. Although I'm still hesitant based on previous experiences, I thought it at least deserved a star back. Edit (2022): I've increased to 3 stars as the courier seems to be improving.