Temp mail for ChatGPT

This is the page where the honest answer is the least convenient one. OpenAI runs new ChatGPT sign-ups against a disposable-domain list, and shared temporary domains are refused more often than they are accepted. A custom domain is the only approach that works consistently.

Email that doesn't
survive the hour.

Disposable inboxes for sign-ups, verifications, and forms you'll never visit twice. Free, anonymous, no tracking.

free · 30 min default · no tracking · no retention

How to sign up

  1. Connect your own domain to DustMail on the Premium plan, so the address does not appear on any public throwaway list.
  2. Generate an inbox on that domain and copy the address.
  3. Start the ChatGPT sign-up and paste the address rather than using a social login.
  4. Open the verification mail in this inbox and follow the link before it expires.

What it costs you

Trade-offA shared DustMail domain may work today and be refused tomorrow, because the block list is updated continuously and applies to the domain rather than to your account. Treat a successful sign-up on a shared domain as luck, not as a method.

Questions

Why does OpenAI say my email address is not supported?

The domain is on a disposable-provider list. The message is about the domain, not about you or the address, so retrying the same domain will produce the same result no matter how many inboxes you generate on it.

Does a custom domain always get through?

A domain that is not on any public throwaway list is treated like any other mail domain, so in practice yes. What matters is that the domain is yours and is not shared with thousands of other temporary inboxes.

Do I still need a phone number for ChatGPT?

Often, yes. OpenAI asks for a phone number for many new accounts as a separate step, and that check is independent of which email address you used. No mail provider can satisfy it for you.

What does OpenAI email to this address?

The verification link at signup, then password resets, login alerts, and billing receipts if you subscribe. Product announcements arrive here as well unless you unsubscribe, and API users get usage and quota warnings at the same address.

Which domains does OpenAI usually reject?

It rejects the best-known public throwaway domains outright and accepts the rest inconsistently, so the same address can pass one day and fail the next. A verified custom domain on the Premium plan is the only reliable answer.

Can I change the ChatGPT account email later?

Not directly from the account settings for personal accounts; OpenAI generally requires support to move an address, and support asks you to confirm from the original mailbox. Plan on the first address being the permanent one.

Will the account keep working after the inbox expires?

The session continues until you log out or the token expires. After that, a password reset or a login verification goes to a dead mailbox, and any paid subscription keeps billing to a card while the account behind it is unreachable.