6 Best Open Source AWS SES Alternatives
A curated collection of the 6 best open source and self-hosted alternatives to AWS SES in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for AWS SES in 2026? The top open-source alternative is Sendune — No-code dashboard for AWS SES email management.
Other highly rated open-source AWS SES alternatives include Sessy, Hyvor Relay and Wraps.
No-code dashboard for AWS SES email management
Sendune simplifies AWS SES by providing a no-code dashboard to manage all your transactional and marketing emails. Connect your AWS account and handle everything from contact management to email delivery with ease. - No-Code Dashboard: Manage AWS SES without technical complexity. - Contact Management: Organize contacts with tag-based systems. - Drag-and-Drop Email Designer: Create and customize emails visually. - Template Management: Store and reuse email templates. - Automations: Set up workflows for email sequences and triggers. - Reputation Management: Monitor SPF, DMARC, and DKIM compliance. - Analytics: Track email performance and deliverability. - 99.95% Uptime SLA: Reliable service with high availability. Sendune is a fully hosted service, but the underlying email designer is open-source and available on GitHub. The platform integrates seamlessly with AWS SES, requiring no additional infrastructure setup.
Open-source email observability for AWS SES
Sessy is an open-source email observability tool for AWS SES. Track deliveries, bounces, opens, clicks, and complaints in a dashboard you own. Self-host it or use the hosted version. - Real-time event tracking: Capture every SES event (sends, deliveries, bounces, complaints, opens, clicks) as it happens - Bounce & reputation monitoring: Track bounce rates by type and spot complaint spikes to protect sender reputation - Engagement analytics: Open and click tracking with unique counts and 30-day trend charts - Multi-source management: Separate email streams by application or environment with dedicated webhook URLs - MCP server integration: Query email data directly from AI agents like Claude Code or Cursor - Flexible deployment: Self-host with Docker or PostgreSQL, or use the hosted beta version - Cost-effective: Free self-hosted version with no per-email pricing - Deployment: Docker or Kamal on your own infrastructure - Database: SQLite by default, PostgreSQL support available - Setup: No AWS credentials or complex integrations required - Data ownership: Your data stays on your server with no limits on volume or retention - Migration: Switch between self-hosted and hosted versions seamlessly
Open-source email API for developers
Hyvor Relay is an open-source email API designed for developers who need reliable, scalable, and self-hostable email delivery. Whether you're sending transactional emails, newsletters, or automated notifications, Relay provides a clean REST API with built-in deliverability best practices. - Email API: Send emails via a simple, idempotent REST API supporting HTML/plain text, attachments, custom headers, and multiple recipients. - Automated Workflows: Manage domains, API keys, suppressions, and webhooks programmatically with a powerful scope-based API. - Real-time Webhooks: Receive instant notifications for deliveries, bounces, complaints, and domain verifications. - Domain & DKIM Management: Enforce DKIM signing and manage multiple domains for maximum deliverability and trust. - Project Isolation: Organize work into isolated projects, each with dedicated domains, keys, and webhooks under a single account. - Bounce & Complaint Handling: Automatically manage bounces, complaints, and suppressions to maintain sender reputation. - Email Logs: Access detailed delivery logs with headers, status, and SMTP traces (30-day retention). - Built-in DNS Server: Automate DNS configuration (MX, SPF, DKIM) with an integrated DNS server—no manual setup required. - Observability: Native integrations with Prometheus and Grafana for monitoring performance, alerts, and logs. - Scalability: Horizontal scaling with Docker Swarm on any cloud or on-premises infrastructure. - Health Checks: Instant alerts for server issues, DNS errors, or IP reputation drops to proactively address problems. Hyvor Relay is fully open-source under the AGPL-3.0 license, allowing you to deploy, inspect, and modify the software on your own infrastructure with zero vendor lock-in. The self-hosted version includes all features, with the only differences being licensing terms and support options. For enterprises requiring commercial licensing without AGPL obligations, an Enterprise License is available, offering priority updates, expert support, and SLAs starting at €10,000/year. - SPF, reverse DNS, multiple IPs, and queue isolation baked in. - Automatic suppression lists and feedback loop management. - Extensive documentation on SMTP and email deliverability best practices. - Deployable on any cloud or on-premises setup using Docker Swarm. - Requires SSO (Single Sign-On) for authentication. For more details, visit the official documentation.
Self-hosted email platform for Amazon SES
Wraps is an open-source email infrastructure platform designed to simplify Amazon SES deployment and management. It provisions SES, DynamoDB, Lambda, and other AWS services into your account with a single command, enabling you to send emails while maintaining full control over your data and costs. - One-Command Deployment: Instantly deploy SES, DynamoDB, Lambda, and IAM roles with wraps email init. - Type-Safe SDK: Send emails with full TypeScript type inference using the @wraps.dev/email SDK. - Templates-as-Code: Store and version email templates directly in your repository. - Real-Time Analytics: Track every email send with live analytics powered by your own DynamoDB tables. - Reputation Protection: Automatic bounce and complaint handling with suppression to prevent re-sends. - Zero Stored Credentials: Access via OIDC-federated IAM roles—your AWS keys never leave your account. - Workflows & Automation: Build and automate email workflows with visual editors and TypeScript. - Cost Efficiency: Pay AWS directly at $0.10 per 1,000 emails, significantly lower than competitors. Wraps operates on a Bring Your Own Cloud (BYOC) model, where the control plane (dashboard, templates, workflows) is hosted by Wraps, while the data plane (SES, DynamoDB, Lambda) runs entirely in your AWS account. This ensures: - Full Data Ownership: Your email delivery data remains in your AWS account. - AWS Cost Transparency: You pay AWS directly for sending costs. - Open Source Core: The platform is open-source under AGPL-3.0, with the option to use Wraps-hosted services for convenience.
Email inbox API for AI agents to create, send, and receive messages via REST
AgentMail provides AI agents with real email inboxes, enabling them to create, send, receive, and search messages entirely via REST API. Built specifically for autonomous agents and agentic workflows, it eliminates the need for manual email handling. - Inboxes API: Create, manage, and operate email inboxes entirely via API with custom domains and multi-tenancy support - Threads & Replies: Full email thread management including attachments and realtime events - Semantic Search: Advanced search capabilities to find relevant emails quickly - Data Extraction: Automatically extract structured data from emails - SDKs & MCP: Python, TypeScript, and CLI SDKs with Model Context Protocol (MCP) support - Agent Integrations: Native support for popular AI agents like Claude Code, Hermes, OpenClaw, Codex, Cursor, and Grok - Security: Agent Armor feature to screen inbound mail before agents process it - Scalability: Built for enterprise-grade performance with global infrastructure AgentMail is a fully managed cloud service with no self-hosting option available. The platform provides REST APIs, SDKs (Python, TypeScript, CLI), and MCP servers for seamless integration with AI agent frameworks. All infrastructure is managed by AgentMail with enterprise-grade security and compliance standards.
Open source email platform for everyone
Send product, transactional and marketing emails. Pay only for what you send and not for storing contacts. - Pay-per-use pricing: Only pay for emails sent, not for storing contacts - Multi-purpose email sending: Supports product, transactional, and marketing emails - Real-time analytics: Track deliveries, opens, clicks, bounces and unsubscribes with searchable logs - Visual email editor: Notion-like WYSIWYG editor for designing campaigns without code - Contact management: Import/export contacts, manage lists, and track subscription status - Suppression list: Automatically blocks bounced and complained emails - SMTP relay: Drop-in SMTP service that works with any application or framework - Multi-language SDKs: TypeScript, Python, Go, and PHP libraries available - Self-hosting: Deploy in minutes with open source code - Free tier: Send up to 3000 emails/month with 100/day limit - Open source: Full source code available on GitHub - Self-hosting: Deployable in minutes with Docker or direct installation - API-first: RESTful API with SDKs for multiple programming languages - Database: Uses PostgreSQL for reliable data storage - Infrastructure: Requires Node.js runtime and Redis for caching - Hosting: Can be deployed on any cloud provider or on-premise servers
About AWS SES
Amazon Simple Email Service (SES) is a cloud-based email service designed to help developers send marketing, notification, and transactional emails efficiently. It integrates seamlessly with applications to provide reliable email delivery with high scalability and cost-effectiveness.
Key Features of AWS SES
- High Deliverability: Ensures emails reach recipients' inboxes with built-in reputation monitoring and email authentication.
- Scalability: Handles high email volumes without manual intervention, scaling to meet demand.
- Cost-Effective: Pay-as-you-go pricing model reduces costs compared to traditional email service providers.
- Email Analytics: Provides insights into email performance with open rates, click rates, and bounce tracking.
- Integration: Easily integrates with AWS services like Lambda, S3, and CloudWatch for automated workflows.
- Compliance: Supports compliance with email regulations like CAN-SPAM and GDPR.
- Dedicated IP Options: Allows users to lease dedicated IP addresses for better control over sender reputation.
- Template Management: Create and manage reusable email templates for consistent messaging.
Tech / Self-Hosting
Amazon SES is a fully managed cloud service provided by AWS, eliminating the need for self-hosting. It operates on AWS infrastructure, ensuring high availability, security, and compliance with global standards.