Email delivery platform providing both email testing in sandbox environments and production email API/SMTP sending with advanced deliverability features and analytics.

Mailtrap is a comprehensive email delivery platform with three main components: Email Sandbox for testing emails in development without sending to real recipients, Email API/SMTP for reliable transactional and bulk email sending, and Email Marketing for creating and sending campaigns. The platform offers fake SMTP server, HTML email checker, spam checker, email templates, and actionable analytics. Trusted by 150,000+ monthly active users.
Modern Email Delivery for dev and product teams
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Free spam checker and email testing tool
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Online email testing tool providing spam score checking, deliverability analysis, and malformed content detection for email campaigns.
The industry leader in email preparation
Email on Acid is a comprehensive automated email pre-deployment platform that helps email developers and marketers test emails across the most popular clients and devices. The platform provides campaign precheck, accessibility testing, and deliverability analysis.
DMARC monitoring and email authentication platform
Founded
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Enterprise email authentication and DMARC monitoring platform providing real-time alerts, forensic analysis, and domain protection against spoofing.