A temporary email (also called temp mail or a disposable inbox) is an email address you can use for a short time — perfect for sign-ups, free trials, and receiving OTP codes without exposing your real inbox to spam. On US AI you can generate one in seconds with the 📥 Temp Box tool. Here's exactly how to use it.
Step 1: Get your temporary address
- Open the Temp Box page.
- A fresh email address is generated automatically — no sign-up needed.
- Tap the copy button next to the address to copy it to your clipboard.
Step 2: Use it for sign-up or OTP
Paste the copied address wherever the website or app asks for your email — a newsletter signup, a free trial, or an OTP verification field. Then tap "Send code" on that site, exactly as you would with a normal email.
Step 3: Read your mail in the inbox
- The Temp Box inbox refreshes automatically — new mail usually appears within a few seconds.
- Tap any message to open it and see the full text and your OTP code.
- Copy the OTP and finish your sign-up. That's it!
Step 4: Delete or regenerate when done
When you no longer need the address, use Delete to discard it, or generate a brand-new one. A discarded inbox is gone — nothing links it back to you.
What temp mail is great for
- Free trials & newsletters — try the service without a spam flood in your real inbox.
- OTP sign-ups — many sites accept temp addresses for one-time verification.
- Testing & developers — test signup flows without burning real accounts.
- Downloads gated by email — get the file, skip the marketing list.
What you should NOT use it for
- Bank, money, or payment accounts — losing access means losing your money.
- Important accounts you can't afford to lose (main email, cloud storage, work tools).
- Anything illegal — temp mail is a privacy tool, not an anonymity trick for abuse.
FAQ
Is temp mail free?
Yes — the Temp Box on US AI is completely free, no account required.
Why didn't my OTP arrive?
First wait 10–30 seconds and let the inbox refresh. Some websites block temp-mail domains — if that happens, the site will never send the code. For those sites, use the 💎 Premium Numbers service, which provides real numbers for OTP verification.
How long does the inbox last?
Your address stays active as long as you keep the tab open; generating a new address or clearing it discards the old one permanently.
Can anyone else read my temp mail?
Only you see it on your own device. Still, don't receive sensitive documents through it — temp mail is for low-stakes mail.
3 golden tips
- Keep the tab open while you wait for the OTP — closing it too early loses the inbox.
- One job per address: for unrelated sign-ups, generate a fresh address each time.
- If a site rejects the address, it has blacklisted temp domains — switch to a premium option instead of retrying.