noreply@tm.openai.com
The tm.openai.com domain is an official OpenAI email domain used for workspace and GPT invitations, including messages sent from noreply@tm.openai.com.
What is tm.openai.com used for?
OpenAI lists @tm.openai.com as one of its authentic email domains.
The domain is mainly used for workspace and GPT invitations.
OpenAI also identifies noreply@tm.openai.com as an address used for these messages.
You can check the official OpenAI communication guide when you want to confirm an email domain.
Is noreply@tm.openai.com a real OpenAI email address?
Yes, OpenAI currently lists noreply@tm.openai.com as a legitimate sender for certain messages.
This means the address itself is not a fake domain.
The domain sits under openai.com, which is the official OpenAI web domain.
Still, a real sender address does not mean every message should be trusted without checking.
Why would OpenAI send an email from this domain?
A common reason is a workspace invitation.
Another reason is an invitation to use or join a GPT.
These messages can appear when another person invites you to an OpenAI workspace or GPT.
The email may contain a button that takes you to an OpenAI page.
How can you check if the email is safe?
First, look closely at the sender address.
The domain should end with tm.openai.com rather than a similar-looking domain.
Watch for small spelling changes in the domain.
For example, a domain that adds extra words or uses a different ending deserves caution.
You should also check where an email button leads before clicking it.
OpenAI provides its main service through ChatGPT and its main company website through OpenAI.com.
Can a genuine OpenAI email still be part of a scam?
This is an important question because a legitimate sender does not prove that the invitation is useful or expected.
Recent security research described a case where attackers abused legitimate OpenAI invitations to send unexpected organization invitations.
The messages could pass normal email authentication checks because they were sent through genuine OpenAI systems.
This shows why users should inspect the invitation itself, not only the sender address.
The Push Security analysis explains how this type of abuse can work.
What should you do with an unexpected invitation?
Do not accept an invitation just because it carries OpenAI branding.
Check whether you know the person, company, workspace, or GPT mentioned in the message.
If the invitation looks strange, open ChatGPT directly instead of using the email button.
You can also review OpenAI's login verification guidance if the message contains a login or verification request.
What if the email asks for a verification code?
OpenAI says noreply@tm.openai.com can also be used for login verification messages.
A verification code should only be used when you started the login process yourself.
Never give an email verification code to another person.
If you did not try to sign in, treat an unexpected code as a warning.
Someone may have entered your email address while trying to access an account.
Is tm.openai.com the same as openai.com?
It is a subdomain of the openai.com domain.
The difference is mainly in how OpenAI uses each address.
OpenAI.com serves as the main company website, while tm.openai.com supports specific email and invitation functions.
A subdomain can therefore be official even when it does not look like the main website address.
What is the safest way to handle noreply@tm.openai.com?
Treat the address as an official OpenAI sender, but still check why you received the message.
Confirm that the invitation or login request matches something you actually did.
Check links before opening them.
Never share passwords, verification codes, or other private account details through an unexpected message.
The key point is simple: noreply@tm.openai.com is an official OpenAI address, but the content and context of each email still matter.