Shipped MailBurner: a self-hosted cold email testing app — 2.1M tokens

Shipped MailBurner: a self-hosted cold email testing app

EmailInfra Tool

FULL SEND

First session on emailinfra-tool

First build tracked for this project

2.1Mtokens

11prompts

96:56:24time

5,737lines

Claude Codeclaude-opus-4-8Python$68.61

mostly thinking

Built a self-hosted backend with 13 verified endpoints and registrar integration for disposable cold email testing.

Tokens / prompt190.2k

Cost / line$0.012

Cache hit98%

Burn rate$0.71/hr

Derived from this session's token and cost data. Not shown on the feed.

Building 23%Thinking 77%