I used to add in my invoice asking them to leave feedback when their item arrived so I knew they had received it and were happy with it. Then I'd leave feedback for them. Very few did. I wondered whether buyers felt pushed, so I stopped doing that and it made no difference.

I always send sellers a message when I get what I've bought. I feel it's a courtesy, so they know, plus I leave feedback for them. Most are so grateful.....and shocked! I am very particular about sending a message to international sellers, even if it's a signature on delivery item, because I know how easy things can get lost. Every international seller has replied expressing their immense gratitude for letting them know. It only takes a few seconds to send a quick message, I wish more people would do that. I don't think I've ever got a message from a buyer, so unless they leave feedback, I never know whether they've got it or not! I suppose not having an INR opened they have got it, but sometimes it would be nice to know for sure.