isDisposable
Open-source disposable email detection API platform
isDisposable launched on March 30, 2026.
What it does
Fake signups cost SaaS companies real money — AI credits burned, trials abused, metrics inflated. isDisposable catches them before they enter. Three detection layers: 160K+ domain blocklist, real-time DNS/MX fingerprinting that catches new disposable services, and risk scoring 0-100. One line to integrate: isDisposable(email). Free npm package forever. Pro API from $9/mo adds a dashboard showing exactly how much money you're saving. Paste our AI prompt into Cursor — done in 60 seconds.
Open-source email validation that catches disposable emails before they waste your time. 100k+ domains. Zero dependencies.
One API call. Instant disposable email detection with real-time DNS analysis, risk scoring, and 160k+ known domains. Built for developers. Under the hood, your server checks isDisposable before saving to the DB. Submit an email on the left to see the API intercept it in real-time. $ npm install @isdisposable/js import { isDisposable } from '@isdisposable/js' ; if ( isDisposable (email)) { throw new Error ( 'Disposable emails are not allowed' ); } // ✓ Offline. 160k+ domains. Zero latency. Runs offline. No API key needed. No network requests. How it works Layered detection. Millisecond results. Blocklist (< 2ms) 160,000+ known disposable domains checked instantly from our offline database.…from isdisposable.com
Does a similar job
all alternatives →
IsItDisposableAug 2026 · isitdisposable.com · ▲11Stop throwaway emails before they hit your database
DisposableCheck – Disposable Email CheckJan 2026 · disposablecheck.irensaltali.com · ▲12Free Disposable Email Detector & API
IsTempMail – Detect and block disposable email addresses2017 · istempmail.com · ▲35Detect and block disposable, temporary, fake email addresses. Fight spam, fraud and free trial abuse. Available as WordPress plugin and via JSON API.
- IOIsDisposable – Open-source disposable email detection (160K+ domains)Mar 2026 · npmjs.com · ▲5
Free disposable email address detection API2017 · open.kickbox.io · ▲9Free api to detect single-use email addresses
List of disposable email domains to prevent fake registrations2021 · disposable-emails.github.io · ▲28HTML Editor Online. Edit your text and get the HTML code version.
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 22d ago · openbot.run
Talanoa▲341Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, March 2026
the whole month →
Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com
Littlebird▲709Littlebird remembers everything across your meetings, messages, docs, and apps, then takes action so you can recall any detail and never lose context.
AI · Mar 2026 · littlebird.ai
