Hi, thanks for getting back to me! My 3rd part vendor is artofwhere.com. I was just looking at my api rest log and the info that came through when the order was marked completed doesn’t look to have the tracking info in it. I got the tracking number in an email to me from artofwhere. I’m guessing that woocommerce will only send a single email once an order is “Completed” so that when I add the tracking info it won’t send another. If I could figure out a way to have it not send that completed email so that your plugin would send an email when I add the tracking number, that would be great. Of course, if ArtofWhere would just send the tracking info via rest api, then everything would be easier I guess.