I wrote an email app that accepts only one sender per inbox

A potentially AI-related product surfaced from a public Show HN launch post.

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Launch summary

Infinite inboxes, including prefixes where you don't have to create inboxes before you use them -- they self create when you add a suffix. Three types of inboxes: - One sender. Locks to the first domain to send email (except gmail, outlook, etc where it locks to an email account for obivous reasons. It bounces everyone else. - Temporary. Lasts for a while (24h, 7days, etc) then bounces. Received messages stay or go as per your choice. - Prefix. The most powerful. Declare a prefix like "service" and then invent any suffix, like "service-netflix" or "service$bank" and it creates a new one-sender inbox locked to whoever wrote first. Bring you own domain. Bring your own AI (MCP server ready). Forwarding. Please help me test it.

67 Hacker News pointsDetected Oct 14, 2026

Visit product website Original Show HN post ↗

Source: Hacker News Show HN. Public listings are automatically detected and can be corrected or removed by contacting TechRankr.