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.
- mail.l9s.io
- Ports 587 & 465
- From £5/mo
Who uses it
SaaS apps, WordPress/WooCommerce stores, CRMs, and internal tools that need reliable outbound email.
FAQ
Is this for newsletters?
Layer 9 SMTP is aimed at transactional and application email, not bulk spam or unsolicited marketing.
Where is infrastructure?
Operated by Layer 9 Solutions Ltd with UK-focused operations.