0–30 seconds
Make sure the countdown is still running
The address stops receiving mail after it expires. If the page is still active, click refresh once—there’s no need to refresh repeatedly.
Layered email delivery diagnosis
No verification code yet? Don’t keep resending it
Most delays come from the sending queue, an incorrectly entered address, or sender policies. Check from nearest to farthest to avoid an old code replacing a new one and identify rejections faster.
Run a 90-second quick check first
Keep this page open and don’t switch addresses right away. Email usually takes a moment to arrive, and repeated actions may trigger the sender’s rate limit.
30–60 seconds
Check the full address character by character
Check every character before and after @, including hyphens and the domain. Make sure copying did not add spaces or omit the ending.
60–90 seconds
Check the sender’s feedback
Return to the original site and look for “sent,” a cooldown countdown, or an unsupported-address message. Follow any clear prompt first.
After that
Resend only once
Wait one or two minutes before requesting another message. If several arrive, use the verification code from the most recent one.
Continue by troubleshooting each layer
Whether the same address can receive other emails is the key clue for separating a local session issue from a sender queue or domain policy issue.
Address layer: copy or session issue
If refreshing the page restores the same email address, the session is still active. If the address changed, old messages will not appear in the new inbox automatically—return to the sender and use the current address.
- Don’t type long addresses by hand
- Submit the form again after changing addresses
- Make sure enough time remains
Sending layer: queue, rate limit, or invalidation
Some services allow only one message per minute, and a new request may invalidate the previous code. Wait for the cooldown to end, then make one clear request.
- Use the latest code
- Check for an error message on the page
- Don’t resend from multiple tabs at once
Policy layer: temporary domain rejected
Senders may reject temporary email domains. BoxTmp cannot bypass another service’s registration policy, so use an email address you control long term instead.
- Follow the service’s access rules
- Don’t repeatedly change addresses to get around them
- Use a stable email for important accounts
Content layer: message flagged as suspicious
Very large messages, dangerous attachments, or obvious abuse may be rejected. Temporary inboxes are suited to verification codes and lightweight notifications—not file delivery.
- Request a plain-text verification code
- Use a stable channel for important attachments
- Verify that the sender’s domain is genuine
Check these three things when the email arrives
An email arriving does not make it trustworthy. Before opening it, compare the sender, subject, and task you just performed to avoid being misled by an unrelated message.
| Check | Normal signs | Warning signs |
|---|---|---|
| Sender | The domain matches the service you just used | A lookalike spelling, free-mail address, or unfamiliar domain |
| Verification code | Only for the current page and valid for a short time | Asks you to forward it or provide a password |
| Link | Clear destination domain and HTTPS enabled | Shortened link, multiple redirects, or pressure to pay |
| Attachment | Matches what you requested | Executable file or unsolicited archive |
When to stop troubleshooting
After waiting five to ten minutes, confirming the address is correct, and seeing the sender clearly reject it, refreshing further usually won’t help. Move important tasks to a stable email address promptly.
Need us to confirm service status?
Send the time it occurred, the sender’s domain, and the message shown on the page to support@boxtmp.com. Do not send verification codes, passwords, ID documents, or the full email body.