You can change your USPS username, but the process depends on which USPS portal you use

USPS offers several portals for different purposes — Informed Delivery, USPS Tracking, Business Customer Gateway, and others — and each one handles username changes differently. Some let you change it directly in account settings. Others require you to contact USPS support because the username is tied to your account in a way that prevents self-service changes. The fastest route is to log in and look for an account or profile settings option; if that does not work, you will need to call or use the web form.

The reason for these differences is that some portals use your email address as your username automatically, while others let you create a custom username when you sign up. If your portal uses your email, changing the username means changing the email on file, which has bigger consequences for account recovery and notifications. That is why USPS restricts it.

Key Takeaways

  • Informed Delivery and most USPS tracking portals use your email address as your username and do not allow you to change it without changing your email on file.
  • Business Customer Gateway and some commercial portals may let you change your username through account settings if you created a custom one at signup.
  • If you cannot find a username change option in settings, contact USPS Customer Service by phone at 1-800-275-8777 or through the web form on usps.com.
  • Changing your username does not affect your mail delivery, account history, or any services already set up — it only changes how you log in.

How to change your username in account settings

Log in to the USPS portal you use. Look for a menu option labeled "Account," "Profile," "Settings," or "My Account" — this is usually in the top right corner or in a dropdown menu. Click it and look for a field that says "Username" or "Change Login Name."

If you see that field, click "Edit" or "Change" next to it. Enter your new username and confirm it. Most portals will ask you to re-enter your password to confirm the change. Click "Save" or "Confirm." You should see a message saying the change was successful. Log out and log back in with your new username to make sure it works.

If you do not see a username field in settings, or if the field is grayed out and not editable, your portal uses your email address as your username. In that case, you cannot change it without changing your email address on file, which requires contacting USPS directly.

Changing your email address if your email is your username

If your USPS portal uses your email address as your login, you can change which email address is on file, and that will change your username. Go to account settings and look for "Email Address" or "Contact Email." Click "Edit" or "Change," enter your new email address, and confirm it. USPS will usually send a confirmation link to both your old and new email addresses.

Click the confirmation link in the email from USPS to complete the change. After that, you will log in using your new email address. Your old email address will no longer work for that account. Make sure you have access to the new email address before you confirm the change, because you will need it to recover your account if you forget your password.

When you need to contact USPS support

Call USPS Customer Service at 1-800-275-8777. Have your current username and the email address on file ready. Tell them you want to change your username and which portal you use. They will verify your identity by asking for information like your address or recent mail activity.

You can also submit a request through the USPS website. Go to usps.com, scroll to the bottom, and click "Contact Us." Select the portal you use from the dropdown menu, then choose "Account and Login Issues." Fill out the web form with your current username, the new username you want, and any other information they ask for. USPS typically responds to web form requests within one to two business days.

If you are locked out of your account or cannot remember your username, use the "Forgot Username" or "Forgot Password" link on the login page instead of calling. This usually sends a recovery email to your registered email address and is faster than phone support.

What happens to your account after you change your username

Changing your username does not affect your mail, your delivery address, any services you have set up, or your account history. Informed Delivery will still show your mail. Any mail forwarding, package holds, or delivery instructions you set up will stay in place. Your password remains the same unless you change it separately.

If you use your USPS username to log in to other services — like a third-party mail tracking app or a business system that connects to USPS — you may need to update your login information there as well. Check any apps or services that use your USPS account and update them with your new username if they ask for it.

Reasons you might not be able to change your username

Some USPS portals do not allow username changes at all because they use your email address as a permanent identifier. This is common for consumer portals like Informed Delivery and USPS Tracking. The reason is security: if you could change your username freely, someone with access to your account could lock you out by changing it without your permission.

Business portals sometimes have the same restriction if your account is linked to a business license or tax ID. In those cases, USPS treats the username as part of your official business record and does not allow changes through normal settings. You would need to contact USPS Business Customer Service instead of regular customer service.

If you have been locked out of your account due to too many failed login attempts, you will not be able to change your username until you regain access. Use the "Forgot Password" link to reset your access first.

Frequently Asked Questions

Can I use the same username for multiple USPS portals?

No. Each USPS portal is separate, and usernames are unique within each one. You can have the same email address registered for multiple portals, but you cannot use the same custom username across different USPS services. If you want the same login name everywhere, you would need to use your email address, which works across all USPS portals that accept email logins.

What if I change my username and forget the new one?

Use the "Forgot Username" link on the login page. USPS will send your username to the email address on file. If you do not have access to that email, call 1-800-275-8777 and tell them you need your username recovered. They will verify your identity and send it to you.

Does changing my username affect my password?

No. Your password stays the same when you change your username. You log in with your new username and your existing password. If you want to change your password at the same time, you can do that separately in account settings, but it is not required.

Can I change my username back to what it was before?

Yes. If you change your username and then want to change it back, you can follow the same process. Some portals may have a waiting period before you can reuse an old username, so if you get an error saying the username is unavailable, wait a few hours and try again.

What if my USPS portal username is different from my email address?

That means you created a custom username when you signed up. You can change it through account settings if the option is available. If it is grayed out or missing, contact USPS support. Do not confuse your username with your password — your password is separate and is not shown in settings for security reasons.