What does Inbox Zero
cost to run?
Open-source AI assistant that organizes email and drafts replies.
monthly recurring run cost
Inbox Zero is a founder-scale product with a public revenue signal in the range this directory cares about most. The reported revenue is shown as a sourced claim; the operating-cost range is our independent model.
The largest cost pressure comes from email synchronization, llm reply drafting, queues and observability. Build time covers a reliable paid product rather than a landing-page clone.
Public revenue can become stale and does not reveal profit. Use the source date, assumptions and cost receipt together; founders can correct or verify any figure.
How the bill grows.
Same product class, different usage. This is directional—not a pricing quote.
Where this could be wrong.
- Revenue was reported by the founder in an Indie Hackers interview
- Heavy AI-assistant usage would push the estimate toward the high end
Public sources used.
Make this estimate better.
Founders can verify a range or correct an assumption without exposing confidential vendor contracts.