Delivery troubleshooting decision tree
Don't keep clicking resend. First confirm that the address was submitted, then determine whether the sender has not queued the message, delivery is delayed, or temporary domains are being rejected.
Start here
Changing the address, refreshing, resending, and switching browsers all at once makes it impossible to tell what worked. The sequence below preserves evidence and reduces cooldown triggers.
Compare the address on the page with the sender's form character by character, especially dots, hyphens, and the domain. If it is wrong, create a new inbox and update it with the sender; old messages will not move automatically.
“Request submitted” does not always mean the email has entered the sending queue. Check for page notices, a countdown, or a resend button. If it is still processing, wait instead of triggering it again.
Refresh the inbox once and wait for the update to complete. Background browser tabs may reduce automatic refresh frequency; manual refresh rules out a list that has not yet been updated.
Many platforms limit verification code requests per minute. Repeated attempts may make only the last email valid—or pause sending altogether. Wait for the time shown on the page, then request it once more.
If the page says the domain is unsupported, the email type is invalid, or a work email is required, this is the sender's policy—not an inbox delay. Follow the rules and use an accepted permanent address instead.
Symptoms at a glance
Review the evidence shown on the sending page before deciding whether to wait, resend, extend, or stop using the current address.
| What you see | Most likely cause | Next step |
|---|---|---|
| Sender stays on “Processing” | Not queued yet or service is busy | Wait for the status to change; don't keep clicking |
| Shows as sent, but hasn't arrived after several minutes | Queue, network, or greylisting delay | Refresh once, then allow 10–15 minutes |
| First email arrived, but the code is invalid | A later resend invalidated the old code | Use the email with the latest timestamp |
| Address rejected immediately | Sender does not accept temporary domains | Follow the sender's policy and use a permanent address |
| Countdown is nearly over | Too little time remains to retry | Extend the current inbox first, then resend once |
Refreshing only asks Inboxtmp for new messages in the current inbox; it does not make a third party send another email. It helps confirm whether the list has updated and does not change code validity.
Many systems accept only the newest verification code. If several emails arrive, sort them by time and use the one tied to your latest request—not the earliest message.
Extending only keeps the current address available for future messages; it does not ask the sender to retry delivery. If the message was sent but has not arrived, wait and resend from the sending page.
A new inbox does not inherit messages from the old one. After switching, return to the third-party site, update the address, and send again; otherwise the email will still go to the old address.
For instant verification codes, wait 5–10 minutes first. If the sender explicitly says it is busy or under manual review, follow its timeframe. During the wait, refresh manually only once so you do not confuse a page update with email delivery.
If more than 15 minutes have passed and the sender confirms success, resend once after the cooldown ends. If it fails repeatedly, stop making requests and use the sender's support channel.
For ongoing correspondence, a long-term alias lets you review delivery status over the past month and distinguish delivered, failed, and spam-filtered messages. A temporary inbox is designed for the current session, not investigations spanning multiple days.
This does not mean an alias guarantees delivery of every message, but it provides a more stable address and recent history for ongoing correspondence.
If multiple senders show successful delivery, the current inbox is still active, and manual refreshes continue to fail, contact support@inboxtmp.com. Include the approximate time, address domain, and error symptoms; do not send a full verification code or sensitive message content.
If only one third-party service fails, the cause is more likely its policy or queue. Contact that service's support team first.
