Billing, Credits & Invoices
NullBounce operates on a transparent, purely pay-as-you-go model. There are no recurring monthly subscription lock-ins: you buy the exact number of credits you need, and they remain in your account until you use them.
How Credits Work
Section titled “How Credits Work”- 1 Credit = 1 Email Verification.
- Credits are universal: use them interchangeably for Bulk List Uploads, the Single Email Checker, or our Developer REST API.
- Credits Never Expire: You can buy credits today and use them weeks, months, or years later without any maintenance fees or monthly expiration traps.
- 100 Free Test Credits: Every newly registered account automatically receives 100 free verification credits with zero restrictions and no credit card required.
Purchasing Credits
Section titled “Purchasing Credits”To top up your credit balance, navigate to the Plans & Upgrade page.
Custom Volume (No Fixed Buckets)
Section titled “Custom Volume (No Fixed Buckets)”Unlike platforms that force you into fixed package tiers (e.g. forcing you to pay for 25,000 credits when you only have 11,350 contacts), NullBounce lets you buy the exact volume your list requires:
- Go to Plans & Upgrade.
- In the Enter amount emails to validate input, enter your desired contact count (from 1,000 up to 5,000,000).
- The live calculator dynamically computes your volume discount price.
- Click Buy to open the secure payment checkout.
Progressive Volume Discounts
Section titled “Progressive Volume Discounts”The cost per verification scales down automatically as your volume grows:
| Credit Volume | Price per Verification | Total Cost |
|---|---|---|
| 1,000 | $0.0050 | $5 |
| 5,000 | $0.0020 | $10 |
| 10,000 | $0.0015 | $15 |
| 25,000 | $0.0012 | $30 |
| 50,000 | $0.0010 | $50 |
| 100,000 | $0.0009 | $90 |
| 200,000 | $0.0007 | $140 |
| 500,000 | $0.0006 | $300 |
| 1,000,000 | $0.0005 | $500 |
| 2,000,000 | $0.0004 | $800 |
| 5,000,000 | $0.0003 | $1,500 |
Accepted Payment Methods
Section titled “Accepted Payment Methods”Payments are securely handled by our global Merchant of Record (Paddle), supporting PCI-DSS Level 1 compliance:
- Credit & Debit Cards: Visa, Mastercard, American Express, Maestro, Discover, Diners Club, JCB, UnionPay.
- Digital Wallets: Apple Pay, Google Pay, PayPal.
Transparent Balance History & Free Refunds
Section titled “Transparent Balance History & Free Refunds”Every credit deduction and deposit is permanently audited in the Balance Changes table on the Payments & Balance History page:
- Free Initial Deposit: +100 credits granted upon signup.
- Purchase: +Credits added immediately upon successful checkout.
- Return for Unknown: Destination servers that fail to respond or time out consume zero credits. Credits for all
Unknownaddresses are automatically credited back to your balance. - Return for Abort: If you cancel a batch verification while it is processing, credits for all unstarted contacts are instantly returned to your balance.
Invoices & Receipts
Section titled “Invoices & Receipts”- An official receipt and invoice are sent to your account email immediately upon successful payment.
- You can also view and download invoices at any time in the dashboard:
- Go to Payments History.
- Locate your transaction under Payments & Invoices.
- Click Receipt to open your hosted invoice. You can add your business name, billing address, and tax/VAT identification number directly on the invoice page before downloading the PDF.
Troubleshooting Declined Payments
Section titled “Troubleshooting Declined Payments”If your transaction is declined during checkout, it is almost always triggered by the issuing bank’s automated fraud prevention:
- Cross-Border Authorization: NullBounce transactions are processed globally. Some card issuers block foreign or international software transactions by default.
- 3D Secure / OTP Failure: Make sure your mobile banking app or SMS authentication approves the 3D-Secure challenge prompt.
- Insufficient Funds / Limits: Verify your online daily spending limit.
Solution: A quick call or in-app message to your bank confirming that you authorize the purchase typically resolves the issue immediately.