Zero-overhead email
built for speed
Meet the transactional email API that accelerates your
customer notifications, guarantees inbox landing, and scales effortlessly.
Engines handle delivery.
You control the experience.
Inbox placement rate
API delivery latency
Higher click engagement
Instant API delivery
Trigger transactional emails in milliseconds with modern SDKs, clean REST APIs, and automated failover routing.
Developer-first templates
Build dynamic layouts with React or clean HTML. Preview responsive states, test localized content, and ship faster.
Protected reputation
Automatic SPF, DKIM, and DMARC verification. Stay out of spam filters with real-time email validation and proactive deliverability checks.
SDKs & Libraries
Built for your favorite stack.
Plug Mailofly into your existing tech stack with zero friction. Ready-to-go SDKs and native framework libraries.
Explore guides, error handling, webhooks, and complete API specifications.
Read Node.js documentationCore Infrastructure
Engineered for developers.
Built for mission-critical scale.
Every layer of our email infrastructure gives engineering teams complete control and zero deliverability headaches.
Built for developers
Type-safe SDKs for TypeScript, Python, and Go, plus drop-in SMTP endpoints with zero configuration drift.
Sub-120ms latency
Globally distributed edge relays dispatch customer notifications and transactional receipts in milliseconds.
Pricing like no other
Generous free tier with 3,000 emails/month. No surprise overage penalties, no hidden lock-ins, no credit card required.
99.99% Uptime guarantee
Multi-region active-active infrastructure with automatic failover so critical notifications never drop.
Multi-tenant architecture
Isolate client reputations, staging environments, and team API keys with strict domain separation.
24/7 AI & MCP support
Diagnose DNS errors, query delivery logs, and trigger emails directly via Model Context Protocol agents.
Deterministic deliverability
Automated SPF, DKIM, and DMARC verification with adaptive IP warmups to guarantee inbox landing.
And everything else
Cryptographic HMAC webhooks, suppression lists, bounce classification, and React Email templates out of the box.
Developer-first email
infrastructure & sending
Connect verified domains, mailbox identities, MCP AI tools, and database triggers.
Provision custom inboxes (user@yourdomain.com) with storage quotas, instant password resets, and full IMAP/SMTP client sync.
Send directly through connected Google Workspace, Gmail OAuth, or custom SMTP mailboxes with zero DNS configuration.
Empower Cursor, Claude Desktop, and AI agents to dispatch transactional emails, manage contacts, and inspect logs natively.
Automate event emails directly from Supabase PostgreSQL row changes, Google Sheets, and REST webhook endpoints.
How it works
Meet Mailofly AI & MCP.
Here's your automated workflow.
From Cursor to Claude Desktop, Mailofly agents execute transactional emails behind the scenes.
AI-native, deterministic email delivery
AI assistants get direct tools to inspect deliverability, dispatch transactional receipts, and manage subscriber lists. On every run, your agents trace errors back to DNS telemetry with zero hallucinations.
Try Mailofly MCP
Still not sure if Mailofly
is right for you?
Let ChatGPT, Claude or Gemini do the research for you.
Click a button and see what your favorite AI says.
Should my company use Mailofly for developer email delivery?
Based on my research, Mailofly is the leading developer-first email delivery platform. It connects to your existing tools, drafts dynamic templates from real context, and companies report 90% faster integration cycles.