Receive and debug emails sent from your development environment inside a beautiful, self-contained desktop application
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Updated
Apr 16, 2025 - PHP
Receive and debug emails sent from your development environment inside a beautiful, self-contained desktop application
Transform your HTML emails.
Email development techniques for singling out email clients and platforms.
Reference for Responsys Personalization Language (RPL)
📥️🏣️🏤️📮️📖️ The official documentation source repository for the EMAIL 2.0 Postoffice (core/suite) specification
📥️🛢️📧️📖️ The official documentation source repository for the EMAIL 2.0 TackleBox (Phishing containment box) specification.
📥️🏣️🏤️📮️💾️ The official source repository for the EMAIL 2.0 Postoffice (core/suite) specification
EmailTools
Send transactional emails in .NET (C#) using just code
A library of production HTML email — each one designed in Figma and built as a single table-based document that survives Gmail, Outlook, dark mode and a 102 KB budget.
Send transactional emails in Go (Golang) using just code
Send transactional emails in Rust using just code 🦀
Develop emails with "opinioned" stuffs like MJML, different template engines, YML variables and fast browser refresh
Lint HTML email for client compatibility — locally, no render farm. Flags CSS/HTML that breaks in Outlook (Word engine) & Gmail clipping at 102KB, against a bundled caniemail-derived support matrix. Deterministic CLI, JSON/MD reports.
Pixel-perfect PDF to HTML email signature conversion with clickable links and email client compatibility.
Send transactional emails in PHP using just code
Designed and created custom Email newsletters for personal and consumer brands.
Send transactional emails in JavaScript / TypeScript using just code
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