Is temp-mail.org a disposable email domain?

temp-mail.org at a glance

Why signups from temp-mail.org cost you money

People reach for temp-mail.org when a form asks for an email they do not want to give: to grab a free trial, a discount code or a download. The account looks real in your database, but the welcome email, onboarding sequence and receipt all go to an inbox nobody reads again.

The damage is quiet: inflated signup numbers, trial-to-paid rates that look worse than they are, bounces that hurt your sender reputation, and in the worst case one person farming endless trials with a fresh temp-mail.org address each time.

How to block temp-mail.org on your signup form

The quick fix is a domain check before the account is created. Our free list of disposable email domains includes temp-mail.org and is public domain (CC0):

const res = await fetch('https://usevetto.com/disposable-domains.json');
const throwaway = new Set(await res.json());

function isThrowaway(email) {
  const domain = email.split('@').pop().toLowerCase();
  return throwaway.has(domain); // true for 'temp-mail.org'
}

A static list goes stale within weeks, because new throwaway domains appear daily. Vetto keeps the list current, also checks the domain's mail servers live, and shows the visitor a friendly message instead of a dead end.

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See all 140 domains we checked on the email domain index.