If your business relies on email signups, keeping that list clean is not optional. Fake and disposable email addresses waste marketing spend, clutter analytics, and let free trials be abused. CleanSignups is a focused email verification service built to stop fake signups in real time, whether you validate one address or thousands at once.
Why a clean signup list matters
A handful of fake addresses can have outsized costs. They inflate your list size, reduce deliverability, and let bad actors consume product resources meant for real prospects. The core goal is simple: make sure people entering your signup forms actually use real, deliverable email addresses.
Prevent fake signups and save marketing resources.
What CleanSignups does
CleanSignups offers both quick, manual checks and a developer-friendly API for real-time validation. Key capabilities include:
- Single and bulk validation for one-off lists or mass imports.
- Real-time API to validate signups as they happen and accept or reject registrations based on results.
- Advanced checks such as MX record testing, blacklist checks, temporary email detection, and deliverability scoring.
- Integrations planned for WordPress, Zapier, and many marketing platforms.
Quick walkthrough
The dashboard provides a clear summary of usage and basic analytics, such as counts of suspicious, valid, and temporary emails.
You can paste thousands of addresses at once or upload a file. If a file contains additional columns, that extra data is preserved when you import it.
Validation is fast. In testing, a list of roughly 1,000 addresses completed quickly and returned a simple report showing valid, temporary, suspicious, and duplicate counts. Results are easy to export to Excel or re-import into a CRM.
API and integrations
The real power comes from the API. Instead of batch processing, call the API when someone signs up to validate the address immediately and decide whether to allow registration. The platform can handle around 160 checks per minute, which is sufficient for most sites and flows.
For non-developers, WordPress integration is on the roadmap, and Zapier or similar automation tools can bridge the gap today. Custom connectors make it possible to plug CleanSignups into contact forms, checkout flows, and SaaS trial signups so fake addresses are rejected in real time.
Developer helpers
- Comprehensive API documentation inside the platform.
- Examples for common stacks and webhooks for immediate feedback.
Handy validation tools inside the platform
Beyond bulk and API checks, CleanSignups includes several targeted tools:
- Domain MX record checker to verify mail exchange configuration.
- Blacklist checker to flag known bad addresses.
- Email generator to create test addresses that appear valid for form testing.
- Email header analysis and deliverability scoring to assess message quality for providers like Yahoo.
Real use cases
CleanSignups is especially useful for:
- SaaS products protecting free trials from disposable email abuse.
- Ecommerce sites reducing fake review signups and fraudulent accounts.
- Marketing teams wanting accurate engagement metrics and better deliverability.
- Any form that should block obvious spam or temporary addresses in real time.
Pricing and deal details
There is currently a lifetime deal available with a discount. Entry plans start around $99 per month for 5,000 validations and include features like a custom webhook. Higher tiers add bulk validation, parallel processing, and advanced insights, with top plans handling tens of thousands of validations per month.
Support and roadmap
Support responsiveness matters when you rely on a verification engine. The team has been receptive and corrected account issues quickly during initial testing. They publish a public roadmap and are actively reviewing additional verification methods such as SMTP validation to further increase confidence in results.
Planned and current integrations include HubSpot, ActiveCampaign, Constant Contact, WooCommerce, BigCommerce, Zapier, a ChatGPT plugin, and a browser extension. Team features and expanded plugins are on the way.
How to use it most effectively
- Use the API to validate signups in real time and prevent fake accounts from entering your system.
- Run bulk cleanups on legacy lists before major campaigns to improve deliverability.
- Combine blacklist and MX checks to reduce false positives while still blocking disposable addresses.
- Use generated test addresses to validate forms and automation flows without polluting real analytics.
CleanSignups removes friction from your signup process while improving the quality of leads and protecting trial conversions. Whether you need a quick bulk cleanup or real-time validation tied into WordPress or Zapier, it provides straightforward tools and a growing set of integrations to make signups more reliable.
