24 Hour Temp Mail
Most disposable inboxes expire in about ten minutes. That is fine for a single instant confirmation and quietly useless for everything else. Here is where each window fits.
Your Temporary Email Address
Waiting for mail...
- No signup
- 24-hour inbox
- OTP auto-detect
- Zero tracking
- Android · Chrome · Firefox
- Developer API
Why ten minutes became the default
The ten-minute window comes from 10minutemail.com, which launched in 2005 and set the pattern the whole category copied. It was a sensible default for what people did then: paste an address into a form, wait a few seconds for a link, click it, leave.
Sign-up flows changed. A single confirmation click has become a code you type back, then a second verification, then a "finish setting up your account" mail an hour later. Ten minutes now expires in the middle of the job more often than it used to.
What actually goes wrong at ten minutes
The failure is rarely dramatic. It is almost always one of these:
- The mail is queued, not instant. Plenty of services send verification through a batch queue. Two minutes is common; ten is not rare on a first deploy or under load.
- The flow has two steps. Verify the address, then a second mail confirms the account or the payment method. The second one frequently misses the window.
- You get interrupted. A phone call, a meeting, a tab you close by accident. You come back to a dead inbox and start over.
- You need it again later. A receipt, a download link, a licence key. Ten minutes gives you no second chance at all.
Every one of those ends the same way: generate a new address and redo the sign-up, having already given the first address to the service.
What 24 hours changes
TempMailGrab inboxes last 24 hours, and can be extended once by another 24 — so 48 hours is the ceiling. That covers delayed mail, multi-step flows, and coming back the next morning for something you did not realise you would need.
The address also stays usable the whole time. If a service emails you again an hour later, the message arrives rather than bouncing into a deleted mailbox.
When ten minutes is genuinely better
This is not a case where longer always wins, and pretending otherwise would be dishonest.
- You want the evidence gone quickly. A shorter window means a smaller period in which the message exists anywhere. If that is the point, ten minutes beats 24 hours.
- You are doing one instant verification and nothing else. The extra window buys you nothing.
- You are testing expiry behaviour. A short TTL is the feature you are exercising.
If the shorter window is what you want, the 10 minute mail page covers that use directly.
Where neither window helps
A longer inbox does not make a disposable address the right tool for an account you intend to keep. Anything that emails you a login code on every sign-in — Steam is the clearest example — becomes permanently locked when the inbox expires, whether that takes ten minutes or two days.
Use a real address for anything you would mind losing. The temporary email guide sets out where the line falls.
Side by side
| 10-minute inbox | 24-hour inbox | |
|---|---|---|
| Instant confirmation link | Fine | Fine |
| Queued or delayed mail | Often misses | Fine |
| Two-step verification flow | Frequently misses | Fine |
| Coming back later for a receipt | Not possible | Fine |
| Minimising how long mail exists | Better | Worse |
| An account you will keep | Wrong tool | Wrong tool |
Generate an address at the top of this page — it lasts 24 hours, and any one-time code in the mail is pulled out for you. For automated testing, the email testing API exposes the same inboxes with configurable lifetimes.
Last verified: . Competitor retention windows may change.
Automate inboxes with the API
Prefer to script it? Generate disposable inboxes and read auto-parsed OTPs & verification links programmatically — built for QA, test automation, and bots. The same private inboxes, over a clean REST API.
# 1. Create a private inbox
curl -X POST https://tempmailgrab.com/api/v1/inbox \
-H "Authorization: Bearer $TMG_API_KEY"
# → { "id": "inb_…", "address": "a1b2c3d4e5f6@tempmailgrab.com" }
# 2. Poll for mail — the OTP + verification links are auto-extracted
curl https://tempmailgrab.com/api/v1/inbox/$ID/messages \
-H "Authorization: Bearer $TMG_API_KEY"
# → { "messages": [{ "extracted_otp": "123456", "extracted_links": [ … ] }] }Related guides
Frequently Asked Questions
How long does a TempMailGrab inbox last?
24 hours by default. You can extend it once by another 24 hours, so 48 hours is the maximum. After that the inbox, its messages and its attachments are deleted by a scheduled job.
Is a 24-hour temp mail better than a 10-minute one?
For most sign-ups, yes — queued mail, two-step verification and coming back later for a receipt all break a ten-minute window. But if your goal is that the message exists for as short a time as possible, ten minutes is genuinely better.
Can I extend a temporary inbox past 24 hours?
Once, by another 24 hours, giving a 48-hour ceiling. There is no way to keep an address alive beyond that — an inbox that never expired would not be a temporary inbox.
What happens to my messages when the inbox expires?
A scheduled job deletes the inbox along with its messages and attachment binaries. You can also delete everything immediately with the delete button rather than waiting.