Productivity · Lifetime deal
Checker
API and WordPress plugin that blocks fake and disposable email signups.
Checker at a glance
- Platform
- Web, WordPress
- Support
- The FAQ claims support for all users, lifetime support for deal buyers and free setup help.
- Note
- The DealMirror page marks all three tiers as expired.
Our take
Is Checker worth buying?
Based on the DealMirror listing, Checker is a narrow disposable email screen with unlimited checks on every tier. The page marks all three tiers as expired, so availability is the first thing to confirm. It does not verify mailboxes, only flags disposable domains.
Good fit if
- You run a free trial and see fake signups.
- You run a WordPress site with registrations.
- You want a simple disposable domain check with no per check fees.
Skip it if
- You need full email verification and bounce checking.
- You need the deal available now, as the page shows it expired.
- You need a clear vendor site and plugin status first.
Which Checker plan do you need?
Prices in USD, excluding tax.
| Tier 1 | Tier 2 | Tier 3 | |
|---|---|---|---|
| Requests per second | 3 | 5 | 10 |
| API keys | 2 | 2 | 3 |
| Platform integrations | 2 | 2 | 3 |
| Disposable email checks | Unlimited | Unlimited | Unlimited |
Before you buy: DealMirror's terms and extra costs
- Refund. DealMirror lists 30 days for regular buyers and 60 days for DealMirror Prime members.
- Redeem. Redeem your code within 60 days of purchase.
- Support. The FAQ claims support for all users, lifetime support for deal buyers and free setup help.
- Platform. API integration plus a WordPress plugin. The page is inconsistent on whether the plugin has launched.
- Note. The DealMirror page marks all three tiers as expired.
What is Checker?
Checker is an API and WordPress plugin that checks signup emails against a database of disposable and temporary email domains. You call it from your signup form to block or flag fake addresses before they reach your user list. The deal had three lifetime tiers that differ in request rate, API keys and platform integrations. The DealMirror page now shows all three tiers as expired.
What Checker says it does
- Database of more than 170,000 disposable domains, refreshed daily (Checker's figure)
- Response time claimed under 200 ms (Checker's figure)
- Unlimited disposable email checks on every tier
- Custom blacklist and whitelist support
Why Checker
Fake signups inflate user counts, abuse free trials and fill lists with bad addresses. Checker screens addresses at signup. It focuses on disposable domains rather than full mailbox verification, and the deal page currently shows it as expired.
How does Checker work?
Redeem your code
Redeem the DealMirror code within 60 days of purchase.
Get an API key
Create a key in the Checker dashboard.
Add the check
Call the API from your signup endpoint, or install the WordPress plugin.
Set rules
Add custom blacklist and whitelist entries.
Watch activity
Review blocked attempts in the analytics dashboard.
Then it handles:
- Blocking disposable email signups
- Stopping trial abuse
- Screening WordPress registrations
- Custom blacklists and whitelists
- Tracking blocked attempts
Who is Checker for?
Built for
- SaaS founders with free trials
- WordPress membership and course sites
- Online stores running promotions
Not for
- Anyone who needs full mailbox verification, not just disposable domain checks
- Buyers who need the deal available today, since it shows as expired
What is included in Checker?
Detection
- Disposable domain database 170,000+ domains
- Custom blacklist and whitelist
- Unlimited checks
Integration
- REST API
- WordPress plugin
- API keys 2 or 3 by tier
Monitoring
- Real time dashboard
- Reporting
Video review
We have not reviewed Checker on video yet.
Get notifiedBuyer reviews
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Add to your workspaceChecker questions
What does Checker do?
It checks email addresses at signup against a database of disposable domains and returns a verdict you can use to block or flag them.
Is the deal still available?
The DealMirror page marks all three tiers as expired. Confirm availability before relying on it.
How do the tiers differ?
Request rate and integrations. Tier 1 lists 3 requests a second, 2 API keys and 2 platforms. Tier 2 lists 5, 2 and 2. Tier 3 lists 10, 3 and 3.
How fast is it?
The page claims under 200 ms in one place and about 100 ms in the FAQ. These are vendor figures.
Does it work on WordPress?
A WordPress plugin is included. The page is inconsistent on whether it has launched, so confirm first.
What is the refund policy?
DealMirror lists 30 days, or 60 days for DealMirror Prime members, with redemption within 60 days.
Often compared with
These are other tools in the same space, not deals on GrabLTD.
- Debounce
- ZeroBounce
- NeverBounce
- Mailcheck.ai
- Kickbox
Sources
Checked . Prices and terms on this page come from:
