Maileroo
The Platform Built for Better Email Delivery
Reliable email API and SMTP relay for developers. Send transactional email in minutes with Maileroo, starting free with affordable plans as you grow.
Maileroo is a modern email delivery platform built to provide developers, agencies, and online businesses with a dependable SMTP relay and developer-friendly REST API. Designed as a lean, privacy-focused alternative to legacy providers like SendGrid and Mailgun, Maileroo combines high inbox placement with transparent pricing and built-in testing tools.
For engineering teams, integration is streamlined via seven official SDKs spanning major backend languages as well as standard SMTP credentials compatible with Laravel, WordPress, WooCommerce, and Post SMTP. A standout addition is Maileroo’s official Model Context Protocol (MCP) connector, allowing AI assistants like Claude and Cursor to inspect email configurations, send transactional dispatches, and automate account workflows directly from agentic development environments.
Deliverability is reinforced by strict sender vetting and membership in the Certified Senders Alliance (CSA). Developers can catch deliverability flaws before deploying using Maileroo’s native sandbox testing environment—verifying SPF, DKIM, DMARC alignment, spam scores, and client-side rendering without exposing end users to test drafts.
With data residency centered exclusively in EU data centers (Germany, Netherlands, Finland, France), a generous 3,000 free monthly email tier, and responsive support from the core development team, Maileroo offers an approachable and robust email delivery backbone for applications scaling from side project to enterprise scale.
Features
SMTP Relay
Send transactional and bulk email from any app, CMS or framework by plugging in SMTP credentials.
Email API
REST API with 7 official SDKs for sending email, rendering templates and managing domains, webhooks and suppressions.
Email Testing
Capture test emails in a sandbox and check spam scores, authentication and rendering before going live.
Maileroo Verify
Send and verify one-time codes over email, SMS, voice, WhatsApp and Telegram through one API.
Inbound Routing
Receive incoming email and route it straight into your application.
Webhooks and Analytics
Track deliveries, opens, clicks and bounces in real time with a full event timeline per message.
MCP Connector
Lets Claude, Cursor and other MCP-compatible agents send email and manage your Maileroo account.
Use cases
- SaaS developers sending password resets, sign-up confirmations and notifications
- Ecommerce and WooCommerce stores sending order confirmations and receipts
- Agencies handling email delivery for many client WordPress sites
- AI agent builders giving Claude or Cursor the ability to send and manage email over MCP
- Dev and QA teams testing emails in a sandbox before they reach real inboxes
- Apps adding OTP login and phone or email verification
- Marketers sending newsletters and campaigns to opted-in lists
- EU businesses that need GDPR-compliant, EU-hosted email infrastructure
Compare Maileroo head to head
Side-by-side comparisons, on pricing, platforms and where each one wins.
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