Mailtrap Email Testing

Mailtrap is an email delivery and testing platform founded by Railsware, a software development company, in 2011, providing a safe environment for testing email sending without accidentally emailing real customers, with a fake SMTP server that captures test emails in a virtual inbox, email on demand API for sending transactional emails with detailed analytics, and deliverability tools including spam score checking, HTML validation, and blacklist monitoring, adopted by over one million developers and companies including Atlassian, Calvin Klein, and Yamaha for their email testing and delivery workflows. The testing inbox provides a safe sandbox environment where emails sent through the fake SMTP server are captured and displayed in a web-based virtual inbox rather than being delivered to real recipients, with features including HTML and text preview, raw email source viewing, spam analysis with spam score and black list checking, HTML validation for rendering issues, email inspection for headers and attachments, and API access for automated testing pipelines and continuous integration. The email API provides a RESTful interface and SMTP relay for sending transactional and marketing emails to real recipients, with features including template management with variables and personalization, suppression lists for managing bounces and unsubscribes, webhooks for delivery events including sent, delivered, opened, clicked, bounced, and spam complaints, detailed analytics dashboard with delivery rates, open rates, click rates, and bounce rates by domain, and dedicated IP addresses for high-volume senders. Designed for development teams and email marketers.