About Mailsniper
Born from real-world pain. After running a B2B SaaS platform for more than 10 years, we knew the trial abuse problem intimately.
The Problem We Faced
Like many SaaS businesses, free trials opened the door to systematic abuse
Users creating dozens of trial accounts using disposable email services
Fake signups inflating our user metrics and making data meaningless
Support costs rising as we dealt with fraudulent accounts
Real conversion rates hidden behind noise from throwaway emails
Marketing campaigns targeting users who would never become paying customers
Our Journey to a Solution
From community lists to building our own detection engine
First Stop: GitHub Lists
We started where most businesses start: community-maintained lists of disposable domains on GitHub. We integrated these lists into our registration flow, blocking known disposable domains. It helped, but the limitations became obvious quickly:
- Lists were always out of date - new disposable services launched faster than the community could track them
- We had to build infrastructure to download and update these lists regularly
- No support when we accidentally blocked legitimate domains
- Coverage gaps meant sophisticated abusers still got through
Next: Third-Party Services
Hoping for better results, we tried various third-party email validation services. Some were better than static lists, but none provided the quality we needed:
- Detection rates were inconsistent across providers
- New disposable domains still took days or weeks to appear in their databases
- False positives blocked legitimate business domains
- Some of these services were run more like side-projects than businesses
The Solution: Build Our Own
Frustrated by the lack of quality options, we took matters into our own hands. What began as a few simple scripts evolved into a sophisticated system:
- Automated scrapers monitoring over 100 disposable email websites
- Smart analysis to identify new domains as they appear
- Manual review processes to ensure accuracy and prevent false positives
- Continuous updates happening throughout the day, not weekly or monthly
The difference was dramatic. We caught disposable domains within minutes or hours of their creation, days or weeks faster than other alternatives.
Our Approach
What makes Mailsniper different
Automated Discovery
Our scrapers run continuously, monitoring over 100 websites that provide disposable email domains. When new domains appear, we detect them within hours.
Manual Verification
We add a human verification layer when our automated systems are uncertain. This prevents false positives that could block legitimate customers.
Always Up to Date
Every API call returns the latest domain intelligence. No infrastructure to maintain, no lists to download, no update schedules to manage.
Our Quality Commitment
Unlike many competitors who rely solely on automated detection, we put exceptional care into the quality of our data. When our automated systems encounter uncertainty about a domain, we add a human verification layer before making a decision.
False positives are costly. Blocking a legitimate business domain means losing a real customer. Our manual review process for uncertain cases prevents these expensive mistakes, ensuring you only block actual disposable domains while welcoming genuine customers.
When Mailsniper flags a domain as disposable, you can be confident the decision was made carefully, with human oversight when needed.
Proven Speed Advantage
Speed matters in disposable email detection. With hundreds of new disposable domains appearing every week, the faster you identify them, the sooner you can protect your platform from abuse.
While GitHub lists and many commercial services take days or even weeks to add new domains, our automated scrapers combined with streamlined manual review identifies new threats within hours.
By the time slower competitors add a domain to their lists, we have already been protecting our customers for days.
Our Mission
We're on a mission to help businesses protect their platforms from disposable email abuse. We know the pain of distorted metrics, wasted resources, and trial abuse because we've lived it. That's why we're committed to providing the highest quality disposable email detection available, combining industry-leading speed with human-verified accuracy. We built the service we wished existed when we needed it.
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