A disposable email inbox, ready in seconds.
No signup. No spam in your real inbox. Generate a free temporary email — a Gmail or Outlook-style alias, or a standard disposable domain — to receive OTP codes and verification links on an address that deletes itself.
Developer REST API with OTP extraction & webhooks · included with Full Access
Why developers & power users choose zephbox
Lightweight, ultra-fast, and built for real-world signup testing
Gmail dot & Outlook domains
Bypass strict disposable email blocking algorithms using genuine provider domain aliases. Because the underlying address is a real Gmail or Outlook mailbox, not a throwaway domain on a public blocklist, it passes the same deliverability checks a personal address would.
<10s automated delivery
Incoming mail is synced from the provider's servers in near real time and pushed straight to your open browser tab, so an OTP code or confirmation link shows up without you refreshing the page or polling manually.
Developer API keys
Generate API keys in your dashboard to integrate disposable email creation into automated testing suites — create an inbox, wait for an OTP, and tear it down again, all from a script with no browser involved.
Zero-signup, zero-log free tier
The free tier never asks for an email, password, or personal detail — it's tracked only by an anonymous device identifier for abuse prevention, and that tracking data is discarded on the same schedule as the mailbox itself.
Custom domains & forwarding
Full Access accounts can attach their own custom email domain for branded testing, and optionally forward specific aliases to a real inbox instead of reading them inside zephbox.
Works in five languages
The full generator and guides are available in English, German, Spanish, Indonesian, and Brazilian Portuguese, not machine-translated on the fly — each locale is a maintained, complete page.
What people actually use zephbox for
Not a single use case — a disposable inbox is a general-purpose tool that shows up in a handful of recurring situations. Here are the ones we see most, with the full write-up on the Use Cases page.
Trying a service before committing an email
Free trials, gated downloads, and "sign up to see pricing" walls all want an email address before they'll let you in. A zephbox address gets you past the wall without adding your real inbox to a marketing list you'll spend months unsubscribing from.
QA and automated signup testing
Teams testing a registration flow, an OTP gate, or a welcome-email sequence need fresh addresses on demand without burning through real mailboxes. The developer API generates and reads inboxes directly from CI, Selenium, or Cypress.
Verifying a one-time code without exposure
Some verification flows (a forum registration, a one-off download, a contest entry) don't need a real, permanent inbox behind them — they need a code delivered once. zephbox is built for exactly that single-use path.
Keeping a primary inbox clean
Every service you sign up with is a service that can be breached, sell your address, or start emailing you unprompted years later. Routing low-stakes signups through a self-destructing address means there's nothing left in your real inbox to leak or spam.
How zephbox's temp mail actually works
Four steps, start to finish: an address is generated, mail arrives, you read it, and then it's gone. No signup at any point in the sequence.
- 1
An address is generated the moment you land here
Pulled from a domain zephbox manages — a standard disposable domain, or a Gmail/Outlook-style alias if you switch to one in the "Change" dialog — and tracked only by an anonymous device identifier, not an account. Nothing personal is exchanged to get a working inbox.
- 2
Mail sent to it arrives in seconds
zephbox syncs incoming mail in near real time rather than on a slow polling schedule, so an OTP code or confirmation link shows up in the live inbox above without refreshing. Automating this instead of watching a browser tab? The developer API can poll or long-poll the same inbox from a script.
- 3
You read it — the address can't do anything else
Open a message right in the browser to see the full content. The address is receive-only by design: there's no compose or reply button, because an anonymous address that could also send mail would be a far more useful tool for spam and phishing than for verification.
- 4
Then it self-destructs, on a timer
24 hours after creation by default (extendable from the inbox toolbar), the address and every message tied to it are permanently deleted — not archived, not hidden. That's what makes it safe for a one-time signup or code: nothing is left behind to leak later. Full retention details are on Security & Privacy.