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

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.



    • Comments URL: https://news.ycombinator.com/item?id=50090932


    Points: 17


    # Comments: 7

    7:05 pm, October 14, 2026

    guid

    https://news.ycombinator.com/item?id=50090932

    source_url

    https://clova.email/

    author_name

    edpin2000

    id: 7659
    uid: Ir5e4
    insdate: 2026-10-14 19:05:29
    title: Show HN: I wrote an email app that accepts only one sender per inbox
    additional:

    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.



    • Comments URL: https://news.ycombinator.com/item?id=50090932


    Points: 17


    # Comments: 7


    category: Hacker News
    md5:
    guid: https://news.ycombinator.com/item?id=50090932
    source_url: https://clova.email/
    updated:
    image:
    author_name: edpin2000
    author_link:
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