If you must process an older list containing gmail.com or yahoo.co.jp addresses, run the data through a bulk email verification tool first. This filters out dead accounts, full mailboxes, and catch-all traps before you launch a campaign.
Building a high-quality, legally compliant B2B email database for the Japanese market requires a strategic approach that respects local regulations and prioritizes professional email domains. The Reality of Generic Email Domains in Japanese B2B Sales If you must process an older list containing gmail
domains to convey local trust and credibility, a subset of local businesses in retail or small-scale services maintained generic addresses as a legacy of older digital habits. Risks and Strategic Challenges If you must process an older list containing gmail