Audience
Developers, startups and SaaS teams that send transactional email from their apps, and teams building AI agents that need to send and receive email.
About Mailfully
Mailfully is a hosted transactional email API for developers who need to send and receive messages from applications. Teams can send receipts, password resets, sign-in links, and alerts through a REST API or Node.js SDK, verify custom sending domains, and use reusable templates with variables. Per-message logs show delivery events, while webhooks can report deliveries, bounces, complaints, opens, and clicks to an application endpoint. Automatic suppression prevents later sends to addresses that bounce or complain. Mailfully also supports inbound email through a webhook and API, domain and message management from a command-line tool, delivery analytics, and an MCP server that lets compatible AI coding tools send messages and check their status. A test mode routes test messages to a simulator before live sending. The service is available through a free plan and paid monthly plans.