Email deliverability & list cleaning
Instantly check email address deliverability, remove invalid or spammy emails, and protect your sender reputation.
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.
For every workflow
Clean lists in the dashboard—or validate from your app, scripts, and MCP-connected assistants.
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.
Same validation from cURL or your stack—or let Cursor, Claude Code, and other MCP clients run checks with your API key. Hosted at /api/mcp, no local install.
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 credits 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
}Developers & AI agents
Examples below are for documentation only. Live calls require a Bearer key from API Keys (paid plans after sign-in).
Call the REST API from any HTTP client, or connect MCP clients (Cursor, Claude Code, VS Code Copilot, and others) to validate emails, upload lists, and check credits using your dashboard API key.
Format, domain, and mailbox signals on every address
Safe, cautious, or do-not-send on every row
Free preview, dedupe, segmented downloads
Integrate in code or connect AI agents—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