Zero-overhead email
built for speed
Meet the transactional email API that accelerates your
customer notifications, records delivery status, and scales effortlessly.
Engines handle delivery.
You control the experience.
Free transactional emails / month
Official SDKs
Emails per batch request
Instant API delivery
Send transactional emails with REST APIs, official SDKs, or SMTP, then inspect message status and delivery events.
Developer-first templates
Build dynamic layouts with React or clean HTML. Preview responsive states, personalize supported fields, 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.
Manage sending, templates, contacts, workflows, and delivery events from one platform.
Email API & SDKs
Send with REST, SMTP, or official SDKs for Node.js, Python, Go, PHP, and Dart.
MailProbe List Cleaning
Check contact email addresses with MailProbe validation and review results before sending.
Automations & Drips
Build event-triggered email workflows with delays, conditions, and contact actions.
Multi-Sender Identities
Send from verified custom domains or connected Gmail and SMTP identities. Gmail identities do not require adding sending-domain DNS records to Mailofly.
AutoBan Reputation Shield
Use suppression checks and reputation controls to reduce sending to blocked recipients.
Template Editor & Gallery
Create templates in the visual editor, use supported merge variables, or send HTML rendered from React Email.
Email Logs
Inspect searchable email records, delivery status, and recorded error details.
Signed Webhooks
Receive HMAC-SHA256 signed email events with up to five delivery attempts.
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 business mailboxes, SMTP relay, and marketing campaigns to MailProbe validation, MCP server tools, and campaign analytics.
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.
Email tools for AI assistants
Connect AI assistants to authenticated Mailofly tools to inspect domains, review delivery errors, send transactional emails, and manage contacts. Review proposed actions and use account data to guide troubleshooting.
Try Mailofly MCP
Still not sure if Mailofly
is right for you?
Explore Mailofly with your AI assistant.
Open a suggested prompt in ChatGPT, Claude, or Gemini.
What should I check when evaluating Mailofly for transactional email and marketing workflows?
Suggested evaluation checklistCompare API and SMTP support, SDKs, pricing, delivery logs, webhooks, and the limits that apply to your workflow. Verify current details in the documentation.