CleanSignups is a real-time email verification API that stops disposable emails and fake signups from destroying your sender reputation and wasting your marketing budget.
CleanSignups is a real-time email verification API that stops disposable emails and fake signups from destroying your sender reputation and wasting your marketing budget.
With sub-50ms verification speed and a database of 70,000+ disposable domains, it blocks the 20-30% of low-quality signups that inflate bounce rates, drain campaign budgets, and prevent your emails from reaching real subscribers who will actually convert.
Lightning-Fast Real-Time Protection
CleanSignups verifies emails in under 50 milliseconds, integrating seamlessly into signup forms without creating user friction or noticeable delays that might increase abandonment rates. This lightning-fast response time validates emails as users type, catching disposable addresses and fraudulent patterns before they can submit registration forms and corrupt your database.
The platform maintains a constantly updated database of over 70,000 disposable email domains with automatic daily updates, ensuring protection against new temporary email services the moment they appear. With 99.9% accuracy, CleanSignups confidently blocks fraudulent signups while ensuring legitimate subscribers never face false rejections that could cost you valuable leads.
Bulk Email List Cleaning for Campaign Success
Upload email lists and receive immediate detailed results showing valid emails, invalid addresses, suspicious entries, and temporary disposables that threaten your deliverability. The verification dashboard displays comprehensive quality distributions breaking down your list by domain, showing exactly which providers your subscribers use and highlighting problems before they impact your sender reputation.
Download detailed verification reports with complete control over exported segments, extract only valid emails for your campaign, isolate invalid addresses for removal, or export comprehensive reports containing all results with quality scores and risk assessments. This flexibility ensures you maintain the exact list cleanliness your campaigns require while keeping detailed records of verification activities.
