This is the most common public domain used by modern freelancers, startups, and tech-forward SMEs in Japan. It is highly favored for its integration with Google Workspace tools and reliable spam filtering. 2. Yahoo! Japan Mail ( @yahoo.co.jp )
Over 99% of all businesses in Japan are classified as small and medium-sized enterprises. Many of these are traditional, family-run operations (like local manufacturing workshops, specialized craft shops, or agricultural exporters) that prioritize functional communication over maintaining complex IT infrastructures.
For direct outreach to general inquiry lines (e.g., info@company.co.jp ), utilize official business registries: This is the most common public domain used
While many Japanese companies use their own domain ( @company.jp or @company.com ), a significant number—particularly small-to-medium enterprises (SMEs) and freelancers—rely on major public email providers for convenience and communication.
By providing this list, we hope to facilitate connections between Japanese companies and individuals worldwide. For direct outreach to general inquiry lines (e
Every marketing email must clearly state the sender's identity, physical address, and a visible, functional opt-out (unsubscribe) mechanism.
Here is a blog-style guide on how to ethically and effectively source company contacts in Japan. 1. Leverage Professional Business Databases and a visible
: Entirely separate from the global Yahoo infrastructure, Yahoo! Japan Mail is operated locally under SoftBank's umbrella and remains highly prevalent.
: A directory covering 34 verticals in Japan, including technology, marketing, and pharmaceuticals, with detailed financial and executive insights. Teikoku Databank
A common choice, particularly among those who use Windows-based platforms.
Fun with data: Top Mailbox Providers in Japan - Spam Resource