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MailGate
Block fake & disposable emails before they hit your DB
MailGate detects disposable, fake & fraudulent emails using a bundled list of 8,400+ blocked domains + live DNS/MX checks with zero external API calls. Features: → Offline-first, works without internet → Typo detection (gmial.com → gmail.com) → Bot username analysis → Parked & temp domain detection → Returns ALLOW / FLAG / BLOCK with risk score 0–100 Use as npm library, CLI tool, or self-hosted REST API.
I built MailGate after getting tired of fake signups. Disposable emails, bot accounts, typo domains, all quietly polluting the DB.
Most validation services need an API key and add network latency. MailGate runs entirely offline. 8,400+ blocked domains bundled in the package itself, combined with live MX checks and typo detection.
What it catches:
- Disposable providers (mailinator, guerrillamail, etc.)
- Typo domains (gmial.com, yaho.com)
- Bot-generated usernames
- Domains with no active MX records
- Parked domains
Drop it into any Node.js app:
const { validateEmail } = require('mailgate');
const result = await validateEmail(req.body.email);
// result.action → 'ALLOW' | 'FLAG' | 'BLOCK'
MIT licensed, zero dependencies on external APIs. Would love to hear what you think.
About MailGate on Product Hunt
“Block fake & disposable emails before they hit your DB”
MailGate was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #76 on the daily leaderboard. MailGate detects disposable, fake & fraudulent emails using a bundled list of 8,400+ blocked domains + live DNS/MX checks with zero external API calls. Features: → Offline-first, works without internet → Typo detection (gmial.com → gmail.com) → Bot username analysis → Parked & temp domain detection → Returns ALLOW / FLAG / BLOCK with risk score 0–100 Use as npm library, CLI tool, or self-hosted REST API.
On the analytics side, MailGate competes within Open Source, Developer Tools and Security — topics that collectively have 590.7k followers on Product Hunt. The dashboard above tracks how MailGate performed against the three products that launched closest to it on the same day.
Who hunted MailGate?
MailGate was hunted by otterbtw_. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of MailGate including community comment highlights and product details, visit the product overview.
otterbtw_