Pricing.v1 / Compute-Aligned
Scalable
Intelligence.
Compute-aligned pricing for the next generation of autonomous AI agents. No hidden fees. Pay for what you automate.
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- check_small3 agent inboxes
- check_small500 emails received / month
- check_small100 emails sent / month
- check_smallOTP & verification link extraction
- check_smallMCP server access
- check_smallREST API access
For solo developers running automations.
- check_small10 agent inboxes
- check_small5,000 emails received / month
- check_small2,000 emails sent / month
- check_smallOTP & verification link extraction
- check_smallWebhooks
- check_smallCustom domains (MX, SPF, DKIM)
- check_smallMCP server access
For teams running multiple AI agents.
- check_small50 agent inboxes
- check_small25,000 emails received / month
- check_small10,000 emails sent / month
- check_smallEverything in Starter
- check_smallAI email categorization (BYOK)
- check_smallThread routing
- check_smallContact lists & marketing emails
For production AI pipelines at scale.
- check_small250 agent inboxes
- check_small100,000 emails received / month
- check_small50,000 emails sent / month
- check_smallEverything in Pro
- check_smallPriority support
- check_smallSLA guarantee
- check_smallDedicated deliverability
Need more? Contact us for enterprise pricing with dedicated infrastructure and SLAs.
Compare Plans
| Feature | Free | Starter | Pro | Scale |
|---|---|---|---|---|
| Inboxes & Volume | ||||
| Agent inboxes | 3 | 10 | 50 | 250 |
| Emails received / mo | 500 | 5,000 | 25,000 | 100,000 |
| Emails sent / mo | 100 | 2,000 | 10,000 | 50,000 |
| Core Features | ||||
| OTP extraction | check_small | check_small | check_small | check_small |
| Verification link extraction | check_small | check_small | check_small | check_small |
| REST API access | check_small | check_small | check_small | check_small |
| MCP server access | check_small | check_small | check_small | check_small |
| Webhooks | — | check_small | check_small | check_small |
| Custom domains | — | check_small | check_small | check_small |
| Advanced | ||||
| AI categorization (BYOK) | — | — | check_small | check_small |
| Thread routing | — | — | check_small | check_small |
| Contact lists & marketing | — | — | check_small | check_small |
| Priority support | — | — | — | check_small |
| SLA guarantee | — | — | — | check_small |
| Dedicated deliverability | — | — | — | check_small |
Technical Specifications
Automated Scaling
Infrastructure scales automatically with your usage. No manual provisioning. Inboxes spin up in milliseconds via a single API call.
- check_smallSub-100ms inbox creation
- check_smallAuto-scaling email processing
- check_smallZero-downtime deployments
Data Sovereignty
Your email data stays encrypted at rest with AES-256-GCM. BYOK for AI features means your API keys never touch our servers unencrypted.
- check_smallAES-256-GCM encryption at rest
- check_smallBYOK for AI categorization
- check_smallSOC 2 compliance roadmap
Frequently Asked Questions
What counts as an email received?
Any inbound email delivered to an agent inbox — OTPs, verification links, newsletters, replies. Emails that bounce or are rejected before delivery don't count.
Can I create inboxes dynamically via API?
Yes. Your agents can call POST /v1/inboxes at runtime to provision a new email address in milliseconds. The inbox limit applies to concurrently active inboxes, not total ever created.
What happens when I hit my limit?
The API returns a 402 error with a clear message. Inbound emails already in transit will still be delivered. We never silently drop emails — you'll know before anything is lost.
Do you support Bring Your Own Keys (BYOK)?
Yes. Provide your OpenAI, Anthropic, or Google API key and Lumbox uses it for AI email categorization and OTP extraction. Your key is encrypted at rest with AES-256-GCM.
Can I use my own domain for inboxes?
Yes on Starter and above. Add your domain, configure MX/SPF/DKIM records, and your agents get addresses like agent@yourdomain.com.