(blogs, YouTube, handicrafts)
This study provides an exploratory analysis of the prevalence of company email addresses in Japan that use popular free email services. The findings can inform discussions on email management, data security, and professionalism in the Japanese business context.
: Individual Japanese contacts may sometimes use provider-specific emails like @docomo.ne.jp or @softbank.jp , though these are typically for personal use.
Thus, your 2022 research is best used for historical contact attempts or reaching sole proprietors who have not updated their online presence in three years.
Their member directories are the "Gold Standard" for finding local businesses across various prefectures.