MailerSend
A developer-focused email sending service offering API and SMTP integration with dynamic templates, inbound routing, and SMS capabilities for businesses of all sizes.
MailerSend is an open-source alternative to:
MailerSend is a cloud-based email sending service designed for developers and businesses. It provides a robust API and SMTP relay for sending transactional and bulk emails reliably.
Key Features
- Email API & SMTP: Send emails via API or SMTP with high deliverability
- Dynamic Templates: Create and manage responsive email templates
- Inbound Routing: Process incoming emails with custom routing rules
- Email Verification: Clean and validate email lists before sending
- User Management: Multi-user access with role-based permissions
- Domain Management: Support for multiple domains and DMARC monitoring
- SMS Integration: Send transactional SMS in the US and Canada
- Split Testing: Optimize email campaigns with A/B testing
- Webhooks: Real-time notifications for email events
- MCP Server: New feature for enhanced integration capabilities
Tech / Self-Hosting
MailerSend is a fully managed cloud service with no self-hosting option. The official Node.js SDK is available for integration at https://github.com/mailersend/mailersend-nodejs.