[mendable]

Have you thought to tap out the Japanese Expat market as an advertising/marketing opportunity?

That might include Japanese people living abroad, students, workers living in the middle east for 12 months, etc

The service could very easily appeal to people living abroad and wanting a reminder of home every month.

[bemmu]

I might try it, but wouldn't they have friends who send them items? It's very common even inside Japan that relatives send food items to each other, and I the Japanese expats who I knew in Finland were also getting items sent to them by their parents.

[KaoruAoiShiho]

I agree with mendable, I feel like your service is very convenient, much more so than having friends send you things.