Test email delivery without signing up · Addresses expire automatically,keep forwarding addresses for as long as you need
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Wondering if your test email arrived?
Open this
inbox and find out.

Get a temporary address and receive verification codes in your inbox in seconds.

maple4729@hiderelay.com
Time left 23:59:12
Inbox2 messages
  • X
    Your X login code
    2 min ago
  • Airbnb
    Booking confirmed: entire apartment by West Lake, Hangzhou
    17 min ago
Your X login code
X <verify@x.com> → maple4729@hiderelay.com
2 min ago
X

Hi, someone is trying to log in to X using this email address. Enter the verification code below on the login page to confirm:

418073 Valid for 10 minutes

If this wasn't you, you can ignore this email. Your account won't be affected.

This code is for this login only. Don't share it with anyone.

This is a HideRelay demo email and is not affiliated with X or its affiliates. It will be replaced when a real email arrives.

Why email tests fail

Where your email gets stuck,
is where you lose sight of it.

Signup flows, password resets, order updates—the problem is often not the code, but whether the email actually reached the inbox. Use a clean address to see what happens at every step.

Your X login codeverify@x.com · 2 min ago
418 073
If you don't open it before it expires, you'll need to request a new code

Verification code never arrives

Check whether it's delayed, rate-limited, or blocked by receiving it at a temporary address.

Booking confirmedautomated@airbnb.com · 17 min ago
Check-in3 nights · 2 guests Confirmation codeHMQ4K82ZTX
Unreplaced template variables show up blank

Notification email formatting is off

Check the layout and template variables in real inboxes for order, booking, and reminder emails.

Signup form HideRelay Your email
Once you share your real address, marketing emails keep coming

Your real address is retained

Use a disposable address for test accounts, then set up forwarding if you need to keep receiving emails.

Receive test emails online in 3 steps

Copy the address

An email testing address is ready as soon as you open the page. Click “Copy address” and paste it into the signup form, password reset page, or subscription field you're testing.

Trigger an email

Submit once in your app to send a verification code or notification. The inbox checks for new mail automatically, so there's no need to refresh the page.

Check the email

Verify the sender, subject, code, and formatting. Delete the email when you're done, or let it disappear automatically when the address expires.

One address for every email in a flow

Verification codes and order confirmations appear in arrival order. Open each email separately to check it.

  • Your X login codeverify@x.com
    2 min ago
  • Booking confirmed · 3 nights in Hangzhouautomated@airbnb.com
    17 min ago

Address details

Prefix
Randomly generated or choose your own
Expiry
Deleted when the timer runs out; you can extend it
Emails supported
Verification codes, notifications, and HTML emails
Not supported
Sending or replying to emails

Skip the busywork when testing email delivery

0

signup steps

No phone number or account needed. Open the page and your inbox is ready.

1

click to copy

The full address is copied as one string, with no extra spaces or missing characters around @.

5

interface languages

Use the interface in 简体中文, English, Français, 日本語, or Português—so everyone on your team can use their preferred language.

How is a temporary inbox different from an email sandbox?

A sandbox catches emails before they leave, making it useful in development. A temporary inbox uses the real delivery path, so you can confirm users can receive email before launch.

See the full comparison
Compare temporary inboxes, email sandboxes, and personal secondary addresses
Use case Temporary inbox Email sandbox Personal secondary address
Uses real email delivery Yes No Yes
Account required No Yes Yes
What happens after testing Deleted on expiry Manual cleanup Kept indefinitely
Best for QA and operations Development and integration testing Personal long-term use

Frequently asked questions

Can't find the answer? Email us at support@hiderelay.com

Can temporary email addresses receive verification codes?

Yes. Verification codes for signup and login usually arrive within seconds to a minute. Some platforms block disposable email domains; if that happens, use a permanent forwarding address instead.

What should I do if my test email doesn't arrive?

First, make sure you copied the full address. Then check the sender's logs to see whether the message was delivered. If sending is rate-limited, wait a minute before trying again. For a step-by-step troubleshooting guide, see the signup testing workspace.

How long are received emails kept?

Emails stay available for as long as the address's timer runs. When it expires, the address and its emails are deleted. Click “Extend time” to keep it longer.

Can I send or reply to emails from this disposable address?

No. HideRelay only receives email. This prevents the address from being used to send spam and keeps your inbox clean.

Not sure what SPF or a bounce means?

Common email testing terms like MX, SPF, bounces, and OTPs are explained in our email delivery glossary, with each term explained in a single sentence.

Need an address for ongoing email? Create a permanent forwarding address

Sign in to create a permanent hiderelay.com address that forwards incoming email to your real inbox. Disable it any time, and your real address stays private.

Sign in to create one