WADAX Mail Service is a mail-only hosting plan from WADAX, a brand under GMO GlobalSign Holdings. It is designed for businesses and sole proprietors who need custom domain email without a web server, with all data stored on domestic SSD storage in Japan.

SPF, DKIM, and DMARC authentication is included for both incoming and outgoing email, along with virus scanning, spam filtering, and network-level attack protection. Support is available around the clock by phone, email, and AI assistant, and a money-back guarantee lets new users try the service with less risk.

Custom domain email is supported on all plans, and higher tiers allow more domains. There is no limit on the number of email addresses.

A browser-based webmail interface is included, so users can send and receive email without installing a separate app.

IMAP and POP3 are both supported with SSL encryption for use with desktop and mobile email clients.