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Verification email delivery checker

No verification code?
Match the send and delivery records

You submitted the sign-up form, but there’s no new email in your inbox. Don’t keep hitting resend. Trace the address, sending request, and delivery events for this attempt before deciding what to check next.

Start checking the evidence View current inbox
Check the page Auto-refresh ≠ email delivery

The homepage inbox checks for new messages about every 7 seconds. Refreshing asks “Is there a new email?”—it doesn’t prompt the sending system to send one.

Actual delivery Depends on the entire delivery chain

The application queue, sending service, and receiving server all affect delivery time. Emails often arrive within seconds, but that’s not a guaranteed deadline.

Check first, then continue this attempt

Missing a verification code? Check these three records

Don’t rely only on a “sent successfully” message. At each step, look for a record that matches the current address and trigger time.

Is this the right address, and is it still valid?

Return to the homepage and check the full address and time remaining. An old screenshot, a previous address on your clipboard, or browser autofill could send the email to a different case.

  • Compare the address submitted in the form with the current inbox address, character by character.
  • Check whether the address was valid when the request was made and whether it has changed since.
  • Look for leading or trailing spaces, typos, and recipient rewrites in the test environment.
Check the address in your inbox

Did the application actually submit a sending task?

A successful sign-up request doesn’t mean a verification email was sent. Some systems show the page result first and queue the email asynchronously.

  • Record the trigger time, HTTP response, and request ID—not just a screenshot of the button.
  • Check the application logs for a sending task and confirm the recipient is correct.
  • Check resend cooldowns, rate limits, test switches, and email-domain restrictions.
Keep the request ID with your records

Where does the delivery log stop?

The sending service accepting a task doesn’t mean the email has appeared in your inbox. Use the message ID to trace the full event chain; triggering another email usually won’t help.

  • Check for queued, delayed, accepted, or bounced events, and record their timestamps.
  • If there’s an SMTP response, check the receiving domain, response code, and bounce reason.
  • Distinguish the sending service accepting the request from the receiving server accepting the email.
Compare the four delivery states

Bring all the evidence together

Where should you check next?

Choose based on what you know. “Not sure” is useful information—not proof of a sending failure.

On-page checks

This panel doesn’t connect to your sending system or check your inbox. Your selections stay on this page; nothing is uploaded or saved.

1. Address validity

Use the address shown on this page, the submitted address, and the time remaining.

2. Sending request

This means the application’s sending task, not just a success message on the sign-up page.

3. Delivery logs

Match the events to the same recipient address and request ID.

Generate new steps after changing your selections.

Waiting for checks

Choose what you know to get suggestions

You can start even if you’re unsure about all three. The panel will show which evidence to gather first; it won’t treat “no record” as “sending failed.”

View troubleshooting log fields

Waiting can mean different things

“Sent” doesn’t tell you enough

Your inbox shows whether an email arrived, but it can’t tell you why the sending system didn’t run a task or why it’s still queued.

Application

Not sent yet

The application may not have created a sending task, or a cooldown, rate limit, or environment setting may have blocked it. Refreshing your inbox won’t make the task run.

What you’ll see in your inbox
No matching email yet, but that doesn’t tell you why it wasn’t sent.
What to check
The application response, task creation logs, recipient, and rate-limit records.
Sending service

Queued by the provider

The sending service has a task, but delivery isn’t complete yet. Short delays, retry policies, and the provider’s queue can all affect this stage.

What you’ll see in your inbox
The email hasn’t appeared yet. Waiting longer alone doesn’t prove it was lost.
What to check
Queue time, retry events, latest response, and the provider’s retry schedule.
Acceptance event

Accepted

First check who accepted it. An API accepting a send request means the provider took the job; acceptance by the receiving server is later evidence in the delivery process.

What you’ll see in your inbox
If the email appears, you can confirm it’s shown here. If it hasn’t appeared, the status label alone can’t locate the problem.
What to check
The event definition, final recipient address, SMTP response, and acceptance time.
Explicit failure event

Bounced or rejected

A bounce is a traceable result, but it doesn’t necessarily mean a code error. The address, domain policy, sender reputation, and content policy can all play a part.

What you’ll see in your inbox
Rejected emails usually won’t appear in the target inbox.
What to check
The full status code, reason, target domain, and whether retries are still planned.

If you can’t access sending logs, give the system administrator the trigger time and request ID. Don’t send a production API key or the full verification code to support just to provide more evidence.

A safe retest sequence

Change one thing at a time

Save the evidence for this case before trying again. Changing the address, environment, and resend count all at once makes it hard to identify the cause.

Copy the current address from the homepage

  1. Copy and verify the current address

    Copy it from the homepage instead of retyping it from an old screenshot. Compare the actual recipient submitted to the application with the current address, and make sure it’ll remain valid long enough for this attempt.

  2. Check the resend cooldown, then try once

    Follow the cooldown and rate limits shown by the application. Some systems accept only the latest code generated, so repeated resends may invalidate an earlier email as soon as it arrives.

  3. Note the time and trace the same request

    Record the time zone, request ID, and delivery message ID. To compare, you can use another sending system you’re authorized to use to send a non-sensitive test email to the same address. A test email arriving doesn’t prove the original delivery path is working.

  4. Change the address only if needed for a retest

    First save records that contain no sensitive information, then click “Get a new address” on the homepage. Changing addresses deletes the old inbox. The old address can no longer be used for this test, and existing requests won’t be redirected automatically—you’ll need to submit them again.

Keep this attempt easy to review

A useful delivery troubleshooting record

Once you can match the sending and receiving sides, you don’t need to collect more. Record only what’s needed to troubleshoot, and remove unnecessary personal information before sharing with your team.

Fill out one record per trigger; don’t combine multiple resend attempts.
Field What to record What it helps confirm
Test environment and scenario Staging / test; sign-up, password recovery, or OTP verification; include the build version if needed. Whether you used the wrong environment, a test switch, or different email settings.
Actual recipient address and validity For internal checks, record the full temporary address submitted, whether it matches the current address, and whether it was valid when the request was made. Which case this email should arrive in.
Trigger time and time zone For example, 2026-11-03 14:05:20 +08:00. Record each resend on a separate line. Whether the application logs, provider events, and inbox result belong to the same trigger.
Request and message IDs Application request ID, task ID, and provider message ID. If you don’t have them, write “not available.” Trace from the page request to the asynchronous task and delivery event.
Request response and delivery result Response status; queued, accepted, or bounced events; event times; and relevant status codes. Where the issue stopped, and which conclusions still lack evidence.
Inbox check and next step Check time, whether the email appeared, whether the address changed, and who will check what next. Avoid triggering duplicates and keep the information needed for a handoff.
Never record the full verification code or production credentials.

The email body, sign-in links, cookies, Authorization headers, and production API keys aren’t troubleshooting fields. A temporary address isn’t a private vault. Before using it, read the Privacy Policy and the Terms of Service.

What to do if a temporary email doesn’t receive a code

Common causes of confusion

Separate what you observed from what you conclude. No new email is an observation; “the code must be broken” needs more evidence.

Check the email template after it arrives
How long does a verification email take to arrive?

New emails often appear within seconds, but there’s no fixed delivery time that applies to every sending system. The homepage checks the inbox about every 7 seconds; that’s just the page’s check interval. Application queues, provider retries, and receiving systems take additional time. If you’ve been waiting a while, check the delivery logs instead of treating the refresh interval as a delivery promise.

Should I keep clicking “Resend”?

No. Wait for the application’s cooldown to end, then trigger the email once and record the time. Repeated resends can trigger rate limits or invalidate an earlier code. If several emails arrive later, it may be harder to tell which code is current.

Can I still receive emails sent before an address expires?

Don’t keep using an expired address as a valid inbox. Tempcase temporary addresses are valid for 3 hours by default. Each extension adds 3 hours during the validity period, up to 24 hours total per address. Once it expires, the address and emails are deleted and can’t be recovered. Any old task the provider is still retrying won’t be redirected to a new address automatically.

Does not receiving an email prove my code is wrong?

No. A wrong address, missing task, queue delay, domain restriction, or rejection can all leave your inbox empty. Match the current address, request ID, and delivery events to narrow down the cause. If logs aren’t available, keep the cause unknown rather than assuming a code error.

What if the log says “delivered” but the email isn’t in my inbox?

First check what the provider means by “delivered,” the final recipient, and the event time. Then confirm the current address hasn’t expired or changed, and refresh the inbox once manually. If the mismatch remains, email support@tempcase.com with the time, temporary address, and a redacted message ID. Don’t include a verification code or production credentials.

Does every website accept one-time email addresses?

No. Some services restrict temporary email domains, either rejecting requests or showing only a generic message. Check the service’s rules and response, and don’t try to get around restrictions by repeatedly changing addresses. For your own staging tests, use controlled configuration. For accounts that need to receive recovery emails long-term, consider a forwarding alias.

Match the evidence before testing again

Return to this case

First check the current address and inbox. If the email arrived, inspect the code block and HTML template instead of changing the whole delivery chain at once.

Return to homepage inbox Read the template preview guide