Temp mail means a temporary email address: a free inbox you can use straight away, with no signup, and throw away when you're done. It works like this: a provider owns some email domains, its mail servers accept anything sent to addresses on those domains, and a website shows you the inbox in your browser. You give the address to a site, read the code or link it sends you, and walk away. Your real inbox never hears from that sender.
The other names for it
You'll see the same idea under lots of names:
- Temp mail or temporary email
- Disposable email
- Throwaway email
- Burner email, borrowed from burner phones
- 10 minute mail, after services whose inboxes only lasted a few minutes
- Fake email, which is a misleading name. A temp address is real and receives real mail. It just doesn't last.
They all mean an address you don't own long term and don't need an account for.
How temp mail works under the hood
There's no magic in it. It's normal email with the long-term part taken out.
- The provider owns the domains. A temp mail provider registers domains and sets their mail records (the part of DNS that tells the world where to deliver email for a domain) to point at its own servers.
- You get an address on one of them. When you open a temp mail site, it picks an address on one of those domains, usually a random string of letters and numbers, and sets up an inbox for it.
- Someone sends you mail. The sender's mail server looks up the domain, finds the provider's servers and delivers the message, exactly as it would to Gmail or Outlook.
- The website shows it. The provider stores the message and the site checks for new mail every few seconds, so it pops up in your browser.
- The inbox goes away. After a while the inbox is dropped and you move on.
A few details matter more than the rest.
It's receive only. Most temp mail services can't send or reply. That's on purpose: a free, anonymous sending service would be taken over by spammers almost at once.
How long it lasts depends on the service. Some inboxes last minutes, some hold mail for hours or days, and some are tied to your browser session. On this site your browser reopens the same inbox for up to 7 days after your last visit, and you can save a recovery key to open it on another device. mail.tm keeps each message for 7 days. The safe assumption with any service is that a temp inbox won't be there when you need it later.
The provider can read it. Whoever runs the domain receives the mail, so they can see what's in it. That's fine for a coupon code. It's not fine for anything personal.
The two kinds of temp inbox
This is the part most people don't know, and it's the one that can bite.
| Private session inbox | Public "any name" inbox | |
|---|---|---|
| How you get it | Random address made for you | You type any name you like |
| Who can read it | You and the provider | Anyone who types the same name |
| Examples | This site, temp-mail.org, mail.tm | Mailinator free inboxes, YOPmail, Maildrop |
| OK for codes? | Yes, for one-offs | No |
Public inboxes are handy for quick tests, but they have no password. If you use one to receive a login code or a "click to sign in" link, anyone who guesses or stumbles on the same name can use it too. Never use a public inbox for anything that logs you in.
Good uses for temp mail
Temp mail is for things you'll do once and never need to hear about again. Some everyday examples:
- Downloads behind an email form. A PDF guide, a template, a free chapter. You want the file, not the follow-up sequence.
- A one-off discount code. A shop offers money off your first order if you sign up. Grab the code with a temp address. If you then buy something, check out with an address you keep, because the receipt, delivery updates and any refund go there. There's more on this in the guide to temp mail for shopping, coupons and deals.
- Wifi that wants an email. Cafés, hotels and airports often ask for one just to get online.
- Reading one article. "Sign up to keep reading" walls on sites you'll visit once.
- Trying a free tool before you commit. See if it's any good. If you like it and plan to keep using it, sign up properly with an address you keep.
- Testing your own forms. If you build websites, a temp inbox is a quick way to see what your contact or signup form actually sends. For anything more serious, see temp mail for developers and QA.
- A quick look at a forum or community before you decide whether to join for real.
For social apps, which sit in a grey area because you usually want to keep the account, read temp mail for social media signups first.
When not to use temp mail
The rule of thumb: if you might ever need an email from them again, don't use a temp address.
- Accounts you'll keep. Sooner or later you'll need that inbox, for a new device check, a "confirm it's you" code or a security alert.
- Password resets. No inbox, no reset. You're locked out for good.
- Banking, payments, crypto, tax or anything with money. You need recovery and alerts to work.
- Work, job applications and anything a person needs to reply to. You can't reply from a temp inbox, and nobody will take it seriously.
- Purchases you need a receipt for. Warranty claims, returns and refunds all start with that email.
- Free trials that take your card. Use an address you keep so you see the "your trial ends soon" email before you're charged.
- Anything personal. Medical, legal, school, government. Remember the provider can read it.
Many sites also block disposable domains outright. When a site does that, respect it and use an alias or your real address. The guide on why temp mail gets blocked and what to use instead explains how they spot it.
Temp mail vs alias vs plus addressing
These three get mixed up a lot. They solve different problems.
| Option | How long it lasts | Hides your real address? | Best for |
|---|---|---|---|
| Temp mail | Minutes to a session | Yes | One-off codes and downloads |
| Email alias | As long as you keep it | Yes | Accounts you keep |
| Plus addressing | Forever | No | Filtering your own inbox |
An email alias is a forwarding address from a service like Firefox Relay or Apple's Hide My Email. Mail to it lands in your normal inbox, it keeps working, and you can switch it off if it starts getting spam. Plus addressing (yourname+shop@gmail.com) is a free Gmail feature that's great for sorting mail, but your real address is right there in plain sight. The full comparison is in email alias vs temp mail.
Using temp mail on this site, step by step
- Open the temp mail inbox. An address is created straight away. No signup and no details needed. You can't choose the name or domain; it comes from the mail provider.
- Copy it. Press Copy and paste the address into the form you're filling in.
- Wait a few seconds. The inbox checks for new mail every 5 seconds, and again when you come back to the tab. Most mail arrives within seconds, though some senders are slower.
- Grab the code. Verification codes show up right in the inbox row. One tap copies the code, so you often don't need to open the email at all. Confirmation links show the real domain they lead to, with a warning if the link text names one site but the link goes somewhere else.
- Read safely. Emails open with remote images turned off, so senders can't use tracking pixels to see when you opened them. There's a Show images button if you need them.
- Move on. When you're done, just leave. If you want a fresh address for something else, press New address.
If a code doesn't arrive after a minute, press resend once. If it still doesn't come, the site has probably blocked temp mail domains, and an alias is the better choice.
If you're wondering who can see what's in a temp inbox and whether any of this is allowed, the next read is is temp mail safe and legal.