Friday, third day of streaming in a row (Thursday's got skipped because his mom ended up in the hospital). R$1,860 in sales, 103 users signed up, 22 already active, and a chat poll decides the priority for the night among four possible fronts: the winner is "Blue Email," the system meant to solve the most annoying problem for an email marketing manager — figuring out why a send lands in the Promotions tab or Spam instead of the primary inbox.
With the Brain (the "cockpit" where he documents everything) organized, he opens briefs for five simultaneous fronts: Blue Email (automated deliverability testing, sending to a sentinel Gmail account and re-optimizing across up to five rounds), OpenCloud (a WhatsApp agent that recognizes the user by phone number and talks to Email Hacker AI's MCP), community feature voting, gamified bug reporting with credits, and a referral program. Six, seven, up to eight Claude Code terminals running at once — he calls it "guerrilla mode."
The biggest headache of the night wasn't code, it was bureaucracy: setting up Gmail API OAuth in the Google Cloud Console — client ID, client secret, consent screen, test users — turned into a saga full of swapped screens, a missing checkbox, and "I think I enabled the wrong API." Meanwhile, the first rounds of Blue Email kept landing in Promotions over and over, and he discovers the root cause was using Active Campaign's test-send feature (which goes out through a different server) instead of creating a proper one-to-one segmentation for the sentinel contact.
Past midnight came the turn: with the segmentation fixed and Gmail polling faster, an email finally lands in the primary inbox — "we did it," the most-celebrated shout of the stream. Along the way there was still a detour: seeing a competitor mentioned in chat building, in his words, "68 things" in a spreadsheet-style tool on another platform, he restates his bet out loud — inspired by Y Combinator's vertical-agent thesis — that the right product does one thing deep, not a pile of generic features.
The stream closes low: a deploy breaks because a large Google API library got pushed along by accident, the fix gets pushed to Monday, and he rushes off to his mother-in-law's birthday in Bento Gonçalves. The referral and bug-report systems come out working; feature voting too. Blue Email comes out proven (but fragile), OpenCloud is left half-done.