InboxKit offers two flexible billing models — Subscriptions and Credits — giving you complete control over how you scale your mailboxes, domains, and add-on services. Here’s a clear breakdown to help you choose the best method for your workflow.
What Are Subscriptions?
A Subscription gives you a fixed number of mailbox slots that renew automatically every billing cycle (Monthly / Quarterly / Annually).
Where Subscriptions Are Used
Purchasing mailbox slots (Google Workspace / Microsoft 365)
Ensuring automated, uninterrupted billing
Receiving invoices on every renewal
Subscription Plans
InboxKit offers three plan tiers:
Professional ($39 Per Month) | Includes 10 Google mailbox slots |
Agency ($99 Per Month) | Includes 30 Google mailbox slots |
Enterprise ($299 Per Month) | Includes 100 Google mailbox slots |
You can view or upgrade your subscription from:
Left Sidebar → Subscription
What Are Credits?
Credits act as a prepaid balance in your InboxKit Wallet.
1 Credit = 1 USD
Credits are manually added or auto-charged (if Auto-Top-Up is enabled).
Where Credits Are Used
Credits are used for:
Additional mailboxes beyond your subscription
Purchasing domains
Pre-warmed domain + mailbox bundles
Add-ons:
Inbox Placement Tests
Email Validation
Future add-on services
You can also buy 100% of your mailboxes using credits only
Credits & Renewals
If your mailboxes were purchased using credits:
You must load credits manually before renewal, or
Enable Auto-Top-Up → InboxKit will auto-charge your card when your wallet is low
Check wallet & top-up settings in:
Settings → Billing → Wallet Balance
Invoices vs Receipts
Item | Subscriptions | Credits / Auto-Top-Up |
Invoice Provided | ✔ Yes | ✘ No (only receipt) |
Automatic Card Charge | ✔ Yes | Optional: Auto-Top-Up |
Uses Wallet Balance | ✘ No | ✔ Yes |
Ideal For | Predictable monthly outreach | Flexible pay-as-you-go scaling |
Where to Check Billing Information
1. Subscription Management
Sidebar → Subscription
You can view:
Current plan
Renewal schedule
Upgrade/downgrade options
Billing cycle
2. Wallet Logs (Credit History)
Sidebar → Wallet Logs
Shows:
Credit top-ups
Domain purchases
Mailbox renewals
Auto-top-up transactions
Balance changes
3. Billing Overview
Settings → Billing
Includes:
Wallet Balance
Total credits used
Auto Top-Up settings
Subscription summary
Quick Summary
✔ Subscriptions
Automatic renewals
Invoices provided
Best for steady, predictable monthly mailbox usage
✔ Credits
Pay-as-you-go flexibility
Used for domains, add-ons, warmups
Option to Auto-Top-Up your wallet
Receipts only (no invoices)