Transactional Email
Japanese transactional email platforms help developers send automated, trigger-based messages like password resets, order confirmations, and account notifications without managing email servers. These services handle the complexity of carrier relationships, IP reputation, and authentication protocols so engineering teams can focus on building applications rather than maintaining delivery infrastructure.
These platforms specialize in high-volume programmatic delivery to Japanese recipients, with optimization for domestic carriers like docomo, au, SoftBank, and major webmail providers including Gmail Japan and Yahoo! Mail Japan.
API
RESTful APIs let developers integrate email delivery directly into web applications and cloud services, enabling seamless automation for workflows like user registration, payment confirmations, and shipping updates.
SMTP Relay
SMTP relay support allows teams to migrate from existing mail servers by changing configuration settings rather than rewriting code, making it easy to upgrade delivery infrastructure without engineering overhead. - Low-cost transactional email API from E-AGENCY with automatic plan upgrades to prevent delivery stoppage, SPF/DKIM authentication, and SMTP relay support.Read more →
- Transactional email API service from RAKUS Light Cloud achieving high delivery rates to Japanese carriers with both API and SMTP relay support.Read more →
- High-speed mail relay service from Ymir Link with proprietary MTA for high-volume email delivery with detailed error analysis and monitoring.Read more →
- Email delivery system from RAKUS with API integration and SMTP relay, supporting many companies with effectiveness measurement and tracking features.Read more →
