Posthawk is an open-source email platform designed for developers to send transactional and marketing emails, schedule deliveries, manage templates, and handle inbound email through a simple REST API. It supports both managed cloud and self-hosted deployments, providing a complete email infrastructure with features like high deliverability, bounce handling, and multi-region support.
FIND A BETTER FIT
Alternatives to maileroo
Start with the same category and recorded primary feature, then narrow by the features you need. These are discovery candidates, not a claim that every product replaces every feature.
Consider switching if these limitations affect you: Monthly email quota limits apply; exceeding the quota stops sending until reset or plan upgrade.
Verified alternatives
Each one checked against maileroo: it does the same main job for a similar customer, so a buyer could choose it instead.
Keplars
✓ ReviewedKeplars provides a modern email infrastructure platform designed for developers to build, send, and scale transactional and marketing emails with enterprise-grade deliverability and real-time delivery insights. It supports Gmail, Outlook, and custom domains with features like a unified email editor, sandbox testing, and 24/7 expert support.
Email & communicationFree plan
Noketa is an email platform that unifies transactional email, marketing campaigns, and inbound alias management through a single API. It offers tools for building, sending, and automating emails with a focus on good design, reliable delivery, and developer experience.
Envloped is an email infrastructure platform designed specifically for AI agents, offering native Model Context Protocol (MCP) support and agent-first APIs. It provides developer-friendly tools including a simple API, CLI, and SDKs for sending transactional and marketing emails with intelligent workflows for agentic systems.