Is return postage something that, normally, my local post office would help me with? E.G. do they have some method of marking or adding post to a package that would be accepted globally (or at least within the destination country)?
I think I've sent far more international letters and parcels than domestic. Christmas cards for elderly relatives in the country I was born in, and postcards when I travelled abroad.
Some obscure things I sold on eBay were mostly sent abroad.
United Kingdom
The Royal Mail stopped selling IRCs on 31 December 2011[26] due to a lack of demand. United States
The United States Postal Service stopped selling international reply coupons on 27 January 2013.[27]
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https://en.wikipedia.org/wiki/International_reply_coupon#Uni...
That explains why I was confounded in my efforts to search within USPS results.
https://shop.post.ch/en/packing-sending/sending-letters/regi...
> I was disappointed to find out that the UK’s Royal Mail discontinued international reply coupons in 2011. The only alternative that I could think of was to buy some US stamps.