What is Layer 9 SMTP relay?

Layer 9 SMTP is authenticated relay for the mail your product must deliver — receipts, resets, alerts — without running your own mail servers.

Built for transactional mail

Transactional streams need authentication and clean reputation. Layer 9 SMTP provides SMTP AUTH over TLS with guidance for SPF, DKIM, and DMARC.

SaaS apps, WordPress/WooCommerce stores, CRMs, and internal tools that need reliable outbound email.