MX18 is a developer-first email delivery platform that combines REST APIs, SMTP, and AI-powered deliverability intelligence to help engineering teams send transactional and marketing email at scale. The platform offers real-time analytics, smart routing, and reputation management with 99.9% uptime, backed by multi-region infrastructure and GDPR/DPDP compliance.
Funding
Funding not disclosed
Founders
Product
Problem
Email delivery remains fragmented and unpredictable, with developers facing complex SMTP layers, unreliable inbox placement, and limited visibility into what happens after messages are sent. This lack of transparency and control makes it difficult for engineering teams to ensure their emails reach users reliably, especially as volumes scale.
Solution
MX18 provides a full-stack, developer-first email platform engineered for scale, speed, and reliability. The platform offers instant API access with one-line sending, rich webhook events, and support for multiple programming languages including Node.js, Python, PHP, Ruby, Go, Rust, and Java. MX18 leverages AI-powered deliverability through smart reputation monitoring and pre-send optimization to maximize inbox placement rates, while its multi-region infrastructure ensures 99.9% uptime. The platform includes intelligent email routing, automated suppression management, and comprehensive deliverability diagnostics, giving developers complete control over their email pipeline with real-time observability and actionable insights.
Target Audience
Primary customers are developers, SaaS platforms, marketplaces, and enterprises that need reliable, scalable email delivery infrastructure with deep technical control and transparent analytics.
Features
- REST API and SMTP support with instant API key generation and one-line sending capabilities
- AI-powered deliverability optimization with smart reputation monitoring and pre-send analysis
- Real-time analytics dashboard with event-level logs, routing intelligence, and reputation scoring
- Multi-region infrastructure with 99.9% uptime guarantee and GDPR/DPDP compliance
- Automated warmup, bounce classification using machine learning, and reverse DNS validation
- Webhook endpoints with flexible configuration and sandbox mode for testing
- Dedicated IP options with automated warmup and monthly deliverability audits
- Email validation API with 2,500-5,000 validations monthly depending on plan
- TLS encryption, IP access logs, and PII data privacy controls
- SDKs for Node.js, Python, PHP, Ruby, Go, Rust, and Java with detailed documentation