Email list cleaning for marketers
Validate addresses in real time. Clean lists, reduce bounces, protect your sender reputation—and keep campaigns out of spam folders.
Free trial · Transparent pricing · Lifetime credits available
Quick Try
Run the same inbox and risk checks as dashboard Quick Validate. No account required for a single try.
Free check — sign in for saved history, bulk lists, and API keys
API access requires a paid plan and sign-in. Keys are managed under API Keys in your dashboard.
Why Validation App
Upload, preview duplicates, clean the full list, and download safe-to-send segments.
Inbox checks on every address help protect sender reputation and engagement.
Safe to send, send with caution, or do not send — on every row.
Catch-all, disposable, and role-based addresses flagged so you choose your strategy.
Export only safe contacts or include cautious reach with risky domains explained.
REST API and webhooks for integrations — the dashboard covers everyday marketer workflows.
Pricing
Every paid plan includes the same product. Choose how many validation credits you need per billing cycle and the support level you need—no locked features.
Monthly quotas reset on your billing cycle anniversary. Lifetime credits never expire.
No subscription required
100 credits to explore the product before you subscribe.
Pay once, use whenever you want. Credits never expire — ideal for occasional sends.
Minimum 500 credits (5,000 on your first purchase). Price updates as you type.
$ curl -X POST \
validationapp.com/api/validate/email-check \
-H 'Authorization: Bearer va_live_...' \
-H 'Content-Type: application/json' \
-d '{"email": "[email protected]"}'
# Response
{
"email": "[email protected]",
"recommendation": "safe_to_send",
"score": 7,
"rating": "fair",
"status": "deliverable",
"reason": "accepted_email",
"threat_level": "moderate",
"threat_score": 3,
"domain": "gmail.com",
"provider": "Google LLC",
"time": 7.578
}Developer Experience
Examples below are for documentation only. Live calls require a Bearer key from API Keys (paid plans after sign-in).
A clean REST API that returns predictable JSON. Use it with cURL, your favourite HTTP client, or anywhere you can make a request — signup forms, CRM imports, marketing automation, and more.
Format, domain, and mailbox signals on every address
Safe, cautious, or do-not-send on every row
Free preview, dedupe, segmented downloads
Included on every paid plan
Why clean lists matter
We do not show made-up customer stories. Below is widely shared deliverability guidance plus what this product actually does.
“Mailbox providers track bounces, complaints, and engagement. Sending to invalid, disposable, or high-risk addresses makes the next send harder to place in the inbox.”
— Common email deliverability guidance (ESP & ISP best practices)
“Even a perfectly verified address should not be mailed without consent. Verification tells you whether mail can reach the inbox—not whether you should send.”
— CAN-SPAM Act & permission-based marketing principles (U.S. FTC)
“Upload a CSV, preview duplicates and list health for free, run a full clean with send recommendations, then download safe-only or safe-plus-cautious segments. API and webhooks are included on every paid plan.”
— Validation App product workflow