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 & Capabilities
Engineered for developers.
Built for mission-critical scale.
Every layer of our email infrastructure gives engineering teams complete control and zero deliverability headaches.
Email API & SDKs
Type-safe SDKs for TypeScript, Python, Go, and PHP, plus drop-in SMTP endpoints with sub-120ms global dispatch.
MailProbe List Cleaning
Real-time syntax checking, live MX probing, and disposable trap detection keep bounce rates under 1%.
Automations & Drips
Multi-step customer onboarding and reactivation journeys with local timezone delivery windows and goal exits.
Multi-Sender Identities
Send through custom verified domains or connected Gmail and Google Workspace accounts with zero DNS setup.
AutoBan Reputation Shield
Automated abuse detection, bounce suppression, and tenant isolation to protect your domain reputation.
Template Editor & Gallery
Visual drag-and-drop designer, React Email support, pre-built templates, and dynamic Handlebars merge variables.
Email Logs & Transcripts
Searchable message timelines, raw SMTP handshakes, and tamper-evident cryptographic logs retained up to 7 years.
Webhooks & Redundancy
HMAC-SHA256 signed event streams, 72-hour retries, and 99.99% active-active multi-region queue replication.
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.
Explore all Mailofly platform capabilities in depth
From custom business mailboxes, universal SMTP relay, and marketing campaigns to MailProbe list cleaning, native MCP server tools, and real-time deliverability radar.
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.