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Project case study / dtmail

DEV TOOLSLive product

DTMail

Disposable temp-email developer workspace

A fast, zero-cost disposable temporary email developer workspace designed for seamless testing of sign-up flows, OTP authentication, and automated QA workflows with local webhook relay.

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Role

Creator & Full-stack Engineer

Platform

WEB

Category

Developer tool

Impact

Zero-cost mailbox automation & local webhook relay for auth testing

01 /

Project overview

DTMail provides developers with an instant, privacy-focused temporary email workspace featuring multi-mailbox tracking, 1-click OTP extraction, and direct local webhook forwarding for registration and authentication testing.

System / web

03

DTMail

Next.js / TypeScript / Tailwind CSS / Mail.tm API / Webhooks

02 / Challenge

What needed to change

Testing multi-role registrations (e.g. buyer, seller, admin) or verification flows typically forces engineers to clutter personal inboxes, manually check multiple email providers, or pay for expensive testing services.

03 / Solution

The delivered approach

Engineered a zero-config developer workspace with concurrent multi-mailbox management, automatic OTP and magic link extraction, keyboard-first shortcuts, and a CORS-free local webhook relay proxy to localhost backends.

04 /

Process & implementation

01

Identify QA & testing bottlenecks

Mapped out friction points in manual and automated sign-up flow verification and OTP testing.

02

Build multi-mailbox & webhook engine

Implemented concurrent mailbox tabs, SSE/polling sync, and CORS-free localhost webhook forwarding.

03

Optimize developer ergonomics

Integrated single-key shortcuts, instant OTP copy, and background desktop push notifications.

Responsibilities

  • Architected multi-mailbox state synchronization with real-time polling and unread indicators
  • Built local webhook relay proxy to forward incoming JSON payloads directly to localhost:3000
  • Created smart regex-based OTP and verification link parser with instant clipboard copy
  • Crafted dark ambient UI with single-key hacker shortcuts (C, O, R, N, P, W)

Technology

Next.jsTypeScriptTailwind CSSMail.tm APIWebhooks

Key capabilities

Multi-Mailbox ManagementLocal Webhook Relay1-Click OTP ExtractionDeveloper Keyboard Controls
05 /

Outcome

A highly efficient developer tool that accelerates QA verification, eliminates testing inbox clutter, and makes authentication testing frictionless.

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