Engineering & Product Blog
In-depth technical tutorials, deliverability architectures, and best practices from the Mailofly team.
7 Best Free Email APIs in 2026 for Developers
Looking for a free email API for your app or SaaS? We compare 7 popular email APIs, including Mailofly, Resend, Brevo, Mailgun, Mailjet, Postmark, and Amazon SES — covering free limits, API and SMTP support, key features, and which type of project each one is best suited for.
Mailofly Team
How to Send Transactional Emails from Supabase with Zero Infra
Learn how to trigger personalized transactional emails directly from Supabase PostgreSQL table events with Mailofly. No message queues or background workers needed.
Mailofly Team
Giving Your AI Agents Email Superpowers: Introducing the Mailofly MCP Server
Today, we're making it effortless for AI assistants and autonomous agents to send, test, and manage emails directly from your development environment.
Mailofly Team
The Engineering Behind Every Inbox: Mastering Email Deliverability
Mastering email deliverability isn't just about sending; it's about arriving. This guide unpacks the engineering principles and practical steps necessary to ensure your crucial messages consistently land in the inbox.
Mailofly Team
The Unseen Engineering Behind Every Successful Email Send
Email deliverability isn't a given; it's a constant, engineered effort. Behind every successful send lies robust infrastructure, meticulous IP reputation management, and real-time monitoring.
Mailofly Team
Mastering Email Deliverability: Ensuring Your Messages Land Where They Matter
Email deliverability is crucial for every business, yet often misunderstood. Learn how to ensure your important messages consistently reach the inbox, not the spam folder, and why it's non-negotiable for your success.
Mailofly Team