Feature
Per-Tenant Usage Metering & Billing
Know exactly how many emails each tenant sends. Ark meters usage in real time and exposes it via API — so you can bill customers based on what they actually use.
Real-Time Usage Metering
Every email sent, delivered, bounced, or opened is counted per tenant in real time. No batch jobs, no delayed reconciliation.
Usage API
Query per-tenant usage programmatically. Pull send counts, delivery rates, and engagement metrics into your billing system or dashboard.
Billing-Ready Data
Usage data is structured for billing integration. Get totals by tenant, domain, or time period — so you can plug Ark directly into your pricing model.
Historical Usage
Access historical usage data for any tenant. Generate reports, track growth trends, and reconcile billing periods with precise data.
How it works
Tenants send email
Your customers send email through Ark using their tenant-scoped API keys. Every send is automatically metered.
Query usage via API
Call the usage endpoint with a tenant ID and date range. Ark returns send counts, delivery stats, and engagement metrics.
Feed into your billing
Use the usage data to generate invoices, enforce limits, or display usage dashboards to your customers.
Frequently asked questions
Ready to get started?
Create your first tenant, add a domain, and send your first email — no credit card required.
Free plan available · No credit card required