Note that this is not an exhaustive list, and email addresses may have changed since 2020. Additionally, some companies may not publicly disclose their email addresses or may have specific contact forms for inquiries.
Use official company channels
Legal Considerations: The Act on Regulation of Transmission of Specified Electronic Mail Note that this is not an exhaustive list,
and Sakura.ne.jp : These are top mailbox providers in Japan, hosting thousands of business domains. @gmail.com is common
In Western markets, @gmail.com is common, but @hotmail.com or @aol.net may seem archaic. However, in Japan: Note that this is not an exhaustive list,