No subscription required

Simple pricing. Pay only for what you verify.

Start with daily free checks, then use Account Credits that do not expire while your account remains active whenever you need more volume.

100 free checks per 24 hours for guests
300 free checks per 24 hours for members
Credits do not expire while your account remains active
One shared wallet across supported Sonjj products
No mandatory monthly subscription
Get Account Credits View API Documentation Try Bulk Checker

Plans & Quotas

Choose how you want to verify

Start with daily free quota, then top up Account Credits only when you need extra capacity.

Guest Plan No account required
$0 / forever
100 free checks / 24 hours

Perfect for quick one-off checks and manual verification with zero setup.

  • 100 checks per 24 hours
  • Tracked by IP address (auto-reset)
  • Single email verification Web UI
  • Gmail, Outlook & Disposable detection
Start Checking Free
RECOMMENDED • 3X QUOTA
Member Plan Free Sonjj Account
$0 / forever free
300 free checks / 24 hours

Sign in to unlock higher daily quota, bulk verification features, and unified ecosystem access.

  • 300 checks per 24 hours (Tracked by User ID)
  • Bulk email checker access
  • Higher concurrency & priority queue
  • Single Sign-On across all Sonjj tools
Sign In / Register Free
Account Credit Pay As You Go
1 Credit = 1 Web check
Never expires while account is active

One shared credit balance works across supported SONJJ Ecosystem products. Credits do not expire while the account remains active.

  • Direct API access (rates from 0.05 credits/req)
  • No monthly recurring fee required
  • 1 Shared wallet across Sonjj products
  • Supports Free-First & Credit-First modes
Top Up Credits

Interactive Estimator

Calculate your credit & cost requirements

Estimate credits and USD pricing based on your verification method and monthly volume.

Presets:
Estimated Summary

Credits Required

at current rate

Estimated Cost

USD approximate

Total checks:
Billed checks:
Rate per check:
Cost per 1,000 checks:
Top Up Account Credits

Credits never expire while your account remains active.

Developer API

Direct API Endpoints & Pricing

Integrate real-time email verification into your application, signup form, or backend pipeline with direct per-request credit billing.

Full API Documentation Get API Key
API Base URL https://app.sonjj.com
Authentication Header X-Api-Key: YOUR_KEY

Zero-Risk Billing Guarantee

Charges are deducted only on successful verification results. (validation error, server error, timeout are never charged).

Endpoint Method & Path Rate / Request Est. / 1,000 reqs Description
Disposable Email Check GET /v1/check_disposable_email/ 0.05 credits ~$0.05 USD Fast domain-level disposable email detection.
Gmail Status Check GET /v1/check_gmail/ 0.5 credits ~$0.50 USD Specialized Gmail existence and account status verification.
Microsoft Status Check GET /v1/check_microsoft/ 0.5 credits ~$0.50 USD Specialized Outlook, Hotmail, Live, and MSN account verification.
Full Email Check GET /v1/check_email/ 2 credits ~$2.00 USD Deep verification covering existence, provider type, disposable status, phone-gate requirements, and disabled status.
Quick cURL Request
curl -X GET "https://app.sonjj.com/v1/check_disposable_email/?domain=example.com" \
  -H "X-Api-Key: YOUR_API_KEY"
curl -X GET "https://app.sonjj.com/v1/check_gmail/?email=user@example.com" \
  -H "X-Api-Key: YOUR_API_KEY"
curl -X GET "https://app.sonjj.com/v1/check_microsoft/?email=user@example.com" \
  -H "X-Api-Key: YOUR_API_KEY"
curl -X GET "https://app.sonjj.com/v1/check_email/?email=user@example.com" \
  -H "X-Api-Key: YOUR_API_KEY"

Smart Deductions

How do Account Credits and deduction modes work?

YChecker allows you to balance free daily allowances and purchased credits dynamically. Choose the strategy that matches your workflow.

Default Strategy Zero Configuration

Free-First

Use the daily free quota first, then deduct Account Credits.

1
Daily Free Quota (100–300 checks)

Used first. Auto-resets every 24 hours at no cost.

2
Account Credits (Pay As You Go)

Automatically activated once remaining free quota reaches 0.

Recommended for everyday web users and non-critical manual checking.

API & Production use_credit_first=1

Credit-First

Deduct Account Credits first, then fall back to the remaining daily free quota.

1
Account Credits

Deducts directly from your purchased wallet balance.

2
Remaining Free Quota Fallback

If credits balance hits 0, seamlessly switches to free quota.

Pass parameter use_credit_first=1 in API or payload requests.

SONJJ Unified Wallet

One credit balance. Works everywhere across Sonjj tools.

When you purchase Account Credits at my.sonjj.com, your wallet is instantly accessible across all supported products in the SONJJ Ecosystem. No separate balances, no redundant subscriptions.

YChecker

Email validation & API

Smailpro

Temporary email platform

SMSER

Virtual SMS numbers

Why Choose Account Credits?

  • No Expiration: Credits stay in your wallet indefinitely while your account is active.
  • Zero Monthly Lock-in: Avoid paying $30–$50/mo when your check volume fluctuates.
  • Multiple Top-up Methods: Crypto (BTC, ETH, USDT, LTC) or Credit Cards via Paddle.
Manage Account Wallet at my.sonjj.com

Got Questions?

Frequently Asked Pricing Questions

Everything you need to know about YChecker quotas, Account Credits, and API billing.

Ready to clean and verify your email lists?

Start right now with 100–300 free daily checks or top up Account Credits that never expire for bulk and API workloads.

Get Account Credits Start Bulk Check Developer API Docs