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OpenInbox

Free, unlimited business email on your own domains, running entirely in your free Cloudflare account.

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GITHUB · launched Oct 23, 2026 · 23 upvotes (top 52%) · 0 views

Niche: domain and email hosting services · 64 launches, 7 in the last 7 days · Explore this niche →

Category and tags
  • Horizontal
  • Communication
  • B2B
  • Not AI
  • Hobby / open-source project
  • email
  • email-sender
  • inbox
  • mail
  • mail-server
  • mailbox

Visit website ↗ Source listing ↗

More like this: all 64 launches in domain and email hosting services →

Could you build this?

Partial The inbox UI, routing rules, and Cloudflare Email Routing and Workers integration can be vibe-coded. Reliable sending and inbound spam filtering depend on deliverability infrastructure and reputation, which a solo builder cannot easily replicate.

What it would actually take: A real version needs Cloudflare Email Routing and Workers for inbound mail, R2 or D1 for storage, and an SMTP relay or sending provider for outbound mail. The hard parts are deliverability (SPF, DKIM, DMARC, IP reputation, bounce handling) and spam and malware filtering. Those require email-infrastructure expertise and ongoing operational monitoring.

Competitors

Other products that read as similar to this one : 272 launches clear the similarity bar, closest 8 shown.

Attention rank: #131 of 273 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 357 days after the earliest competitor.

  • Omucloud · ph · 2026-10-17 · 2 upvotes · similarity 0.61
  • Mailflare · hn · 2026-05-27 · 5 upvotes · similarity 0.61
  • Unfoldmail · ph · 2026-11-02 · 1 upvotes · similarity 0.57
  • FounderMail · ph · 2026-11-05 · 80 upvotes · similarity 0.55
  • Lockally · ph · 2026-11-12 · 1 upvotes · similarity 0.55
  • FlareMail · github · 2026-09-14 · 21 upvotes · similarity 0.54
  • Cloudly Inbox · ph · 2026-11-12 · 1 upvotes · similarity 0.53
  • Cloudflare Email Service · ph · 2026-04-17 · 167 upvotes · similarity 0.51

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.