You control the SMTP. We handle the engine.

Build Beautiful Emails. Send Through Your Own Infrastructure.

A powerful drag-and-drop email builder powered by MJML — with full campaign management, analytics, and API access. No vendor lock-in.

No credit card required.

SentinMail drag-and-drop email builder interface

Why SentinMail?

Stop paying per-email markups. Connect your own SMTP and take full control of your email infrastructure.

Own Your Infrastructure

Connect your own SMTP — Gmail, Amazon SES, SendGrid, Mailgun, or any custom server. No forced sending fees. No vendor lock-in.

Built for Reliability

Every email is compiled through MJML for maximum compatibility across Gmail, Outlook, Apple Mail, and more.

Fully Nested Builder

Create simple newsletters or deeply structured layouts with rows, columns, reusable blocks, and custom components.

Campaign + API Ready

Send marketing campaigns, transactional emails, or automate everything via our developer-friendly REST API.

Everything you need to build and send

From visual design to campaign delivery, analytics, and developer APIs — all in one platform.

Powerful Email Builder

Design emails visually with a professional-grade drag-and-drop editor.

  • Drag & drop rows, columns, components
  • MJML rendering engine
  • Real-time preview (desktop + mobile)
  • Reusable design blocks
  • Dynamic merge tags
  • Light & dark UI modes

Complete Campaign Management

Manage your entire email workflow from lists to scheduled sends.

  • List & subscriber management
  • CSV bulk import
  • Advanced segmentation
  • Scheduled sending
  • Rate limiting & throttling
  • Draft & version control

Advanced Analytics

Understand exactly how your emails are performing.

  • Open & click tracking
  • Bounce detection
  • Suppression management
  • Campaign performance dashboard
  • Engagement insights

Developer-Friendly API

Automate everything with a powerful REST API.

  • Create subscribers programmatically
  • Trigger transactional emails
  • Webhook support (delivery, bounce)
  • Secure API tokens
  • Multi-company support

Built for every team

Whether you're a solo founder or an agency managing dozens of clients.

Marketing Teams

Build beautiful campaigns without relying on expensive sending platforms.

SaaS Products

Send transactional emails using your own infrastructure with full control.

Agencies

Manage multiple client accounts in one dashboard with team roles.

Developers

Integrate email workflows directly via API with webhooks and automation.

Simple, transparent pricing

Pay for platform features, not sending volume. You bring your own SMTP — we never charge per email sent.

Enterprise

Unlimited subscribers, dedicated infrastructure, SLA, white-label options, and custom integrations.

Contact Sales

Security you can trust

Your credentials stay encrypted. We never send on your behalf without your SMTP.

MJML-powered rendering for universal email client support
Encrypted SMTP credential storage at rest
Background queued sending with retry logic
GDPR-conscious subscriber management
Rate-limit enforcement & delivery monitoring
Isolated company environments

Ready to Own Your Email Infrastructure?

Stop paying per-email markups. Start building and sending with full control.

Start Free Today

No credit card required.