Housecat.com
Gmail + durable workflows + sandbox VM
Details
- External ID
- 49006149
- Source
- HN
- Company
- —
- Product
- Housecat.com
- Website domain
- housecat.com
- Launched
- July 22, 2026
- Cohort
- —
- Upvotes
- 15
- Upvotes percentile
- 0.6475507765830346
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
Hey we are Housecat.I've spend the last 15 years building dev tools at Heroku, Convox (YC S15), and Segment. Dev tools have gotten insanely good over the decades, now we're working to level up productivity tools for everyday work.Housecat is an email inbox running on an single-tenant agent computer with a durable workflow engine and connections to common tools for day-to-day work.My primary workflow with the product is for customer support: get a support email, trigger a triage process, open a GitHub issue, spin up a coding agent to fix it, and update the customer along the way. All from the same UI and sandbox.We've experimented with lots of different approaches to new workspace tools, and learned that many people still need a great GUI. We've landed on the email inbox as a very familiar and permanent surface and are building tools and automations directly inside it.Under the hood every user gets their own single-tenant sandbox VM and persistent SSD on exe.dev.User connections to Google, Slack, GitHub, etc. are managed in an external service so the VM and agent are subject to external governance and don’t have direct access to secrets.Durable workflows are built on DBOS.dev. Running interactive and deterministic workflows directly inside an email couldn’t feel more different than chatting about emails in Claude.app.The app is built on HTMX, Unix, Go, and SQLite. The app is source available to users and the Linux VM is fully open for a user and their agent to poke around.You can try it out at https://home.housecat.com/beta. It requires a Google / Gmail connection for the email app, which you can revoke any time.We'd love to share more and learn how the community here is managing email, agentic chat, and custom workflows for their work.
Enrichment
- Theme
- AI email agents and deliverability
- Vertical
- Horizontal
- Function
- Workflow automation
- Audience
- B2B
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- email workflow automation with sandboxed execution
- Manually corrected
- False
Could you build this?
Partial The email web UI and standard agent interactions are vibe-codeable, but orchestrating secure single-tenant microVM sandboxes and durable execution workflows requires complex cloud infrastructure.
What it would actually take: The architecture relies on bare-metal microVM hypervisors (such as Firecracker or gVisor) dynamically provisioning isolated environments per user, a durable execution runtime (like Temporal) for resilient asynchronous workflows, and robust bidirectional Gmail sync engines. This demands deep systems virtualization, distributed systems, and security engineering expertise.
Discussion
6 comments analyzed.
Competitors mentioned: Hermes Agent, Other email apps adding AI (unnamed), Sidebar chat in email apps, Chat apps that interact with email
Concerns raised: AI agents shouldn't be fully autonomous with email, Many email AI experiences are underwhelming, Can't trust AI agents for financial calculations yet, Email providers lack good APIs and tools beyond draft/send
Feature requests: CRM context integration, Common templates, Dynamic folders and labels, Integration with workspace tools, Easy workflow customization and coding
Competitors
Other products that read as similar to this one — 59 launches clear the similarity bar, closest 8 shown.
Attention rank: #24 of 60 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 244 days after the earliest competitor.
- MailCat · hn · 2026-02-21 · 9 upvotes · similarity 0.48
- I made an email app inspired by Arc browser · hn · 2026-03-20 · 66 upvotes · similarity 0.40
- AgentMailr · hn · 2026-03-15 · 7 upvotes · similarity 0.39
- LaterOn v2: The agentic email plaftform · ph · 2026-09-25 · 61 upvotes · similarity 0.39
- Transactional Email with a Stripe-like CLI · hn · 2025-12-10 · 15 upvotes · similarity 0.38
- Keyboard First Email Client · hn · 2026-04-11 · 7 upvotes · similarity 0.38
- Agent.email · hn · 2026-05-21 · 99 upvotes · similarity 0.37
- Mudroom · ph · 2026-09-21 · 1 upvotes · similarity 0.37
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a workflow automation tool for Real estate yet.