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reacherhq/check-if-email-exists

View on GitHub ↗ ★ 10,435 Rust

Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.

7 mentions on Hacker News by 7 people: 1 story, 6 comments · first 2021-07-01 · latest 2022-12-11

Mentions per year 7 mentions · busiest year 2021 (6)
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  1. I started with open-source. I initially created https://github.com/reacherhq/check-if-email-exists , after some years it got to ~50 stars and nice overall feedback, that's when I thought of a SaaS wrapper on top of it. So a possible path…
  2. …does not use a DB of emails (like some competitors do). Landing page: https://reacher.email . [1]: https://github.com/reacherhq/check-if-email-exists
  3. GitHub issues like this one warm my heart: https://github.com/reacherhq/check-if-email-exists/issues/91 Identifying something that needs doing, especially when you have no idea how to do it, is a bold skill. Too often have I seen engineers…
    comment by gorgoiler · 2021-07-02 · in Check If Email Exists
  4. …are doing this are they violating CANSPAM? EDIT: Looks like they are indeed doing the SMTP method: https://github.com/reacherhq/check-if-email-exists/blob/a052... I also found a similar, much bigger service here that appears to have been…
    comment by aussieguy1234 · 2021-07-02 · in Check If Email Exists
  5. If you want to know the "how?" as I did - code is here, specifically https://github.com/reacherhq/check-if-email-exists/blob/mast... tl;dr, According to RFC 5321, `RCPT TO` command succeeds with 250 and 251. So email is valid if you get to…
    comment by nickstinemates · 2021-07-02 · in Check If Email Exists
  6. That's what this project does too: https://github.com/reacherhq/check-if-email-exists/blob/a052...
    comment by anonydsfsfs · 2021-07-02 · in Check If Email Exists