Mailtrap Sandbox Checker

by DannyTheDev · dannythe.dev · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Monitor your Mailtrap sandbox inbox from the browser sidebar

Users

+5 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#148K

#123K among extensions

Version

1.0.0

updated 7 May 2026

Users

monthly, 5 months

Latest, 16 Oct 2026: 21 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months

Latest, 16 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Mailtrap Sandbox Checker

📥 Mailtrap Inbox Previewer Stop hunting for tabs. Start testing faster. Tired of the "where is my Mailtrap tab?" dance every time you trigger a test email? The Mailtrap Inbox Previewer brings your sandbox emails directly into your browser toolbar, eliminating the friction of local development. ⚡ Key Features: • Zero-Tab Workflow: View your latest Mailtrap Sandbox emails without leaving your current page. • One-Click Access: A lightweight popup that displays your inbox instantly. • Stay in the Flow: No more re-logging or searching through dozens of open browser windows. • Developer-First: Built by a dev, for devs, to solve the most annoying part of email testing. 🛠️ Simple Setup: • Install the extension. • Enter your Mailtrap API credentials. • Preview your sandbox emails instantly. ☕ Support the Dev: If this extension saved you from a "tab-induced headache," consider supporting further development! https://ko-fi.com/dannythedev This extension is not affiliated with Mailtrap.