Check the full address
Compare the prefix and domain character by character, and remove any spaces copied along with it.
Verification Code Delivery Diagnosis
Can't receive a verification code? Find where delivery is stuck
There are four checkpoints between the sending site and your inbox. Check them in order to avoid repeated resends causing an older code to replace a newer one.
Wait for the sender to process it
Wait 2–5 minutes, then refresh manually once. Don't keep clicking resend.
Make sure the route is active
If the countdown is nearly over, extend it first. If you've switched addresses, update the sending site.
What to do next based on the symptoms
| Symptom | Possible cause | Do this first | Then do this |
|---|---|---|---|
| Inbox is completely empty | Wrong address or sender hasn't sent it | Check the address and wait a few minutes | Resend once |
| Multiple verification codes received | Repeated resends caused the queue to overlap | Use the latest message | Stop resending |
| Code appears to be expired | An older email arrived late | Request a new code and note the time | Choose the one with the latest timestamp |
| Other emails arrive normally | The sender restricts temporary domains | Check the error message on the page | Use a permanent mailbox or alias |
Refresh
Use this when the page may not have loaded the latest email yet. RelayForward checks automatically, but you can also refresh manually.
Resend
Use this once only if no email arrives after waiting. Repeated resends can scramble the order.
Extend
Use this when the mailbox still belongs to the current task but the countdown won't cover your next attempt.
Switch address
Create a new route and start over if the address was entered incorrectly, exposed, or the sender's form can be submitted again.
Why is only the latest verification code valid?
Many systems revoke an old code when generating a new one, so the first email to arrive may no longer work. Check each email's receipt time and use the code from your most recent request.
If the page says you've tried too often, stop resending and wait for the cooldown. Further clicks may extend the restriction.
When should you switch email types?
If the sender explicitly rejects temporary domains, or you'll need to recover the account later, don't repeatedly switch temporary addresses to bypass the restriction. Use a stable mailbox, or create a forwarding route you can manage over time for that service.
When testing email delivery for your own system, also check sending logs, bounce codes, SPF/DKIM settings, and queue status. The inbox only shows the delivery result.
Still haven't received it?
Record the destination address, request time, sending site, and any visible error, then contact the relevant service. When reporting to RelayForward Support, don't send the verification code—just provide the approximate time and address.
If other emails arrive normally, the issue is usually with a specific sender. If nothing arrives at all, switch addresses and run one controlled test.