Why verification emails sometimes do not arrive
Temporary inboxes receive normal email, but some senders apply strict rules. A website may send only one message per address, delay repeated codes, block disposable domains, or stop delivery when too many attempts are made.
Common reasons
The first email may arrive but the second one may not because the sender has a cooldown period. Some services also reuse the first code, throttle repeat requests, or mark temporary domains as risky.
What to try
Refresh the inbox, wait a few minutes, check whether the mailbox is still active, or create a new address. For important accounts, use your permanent mailbox.
Check the delivery path step by step
When an expected message does not appear, first confirm that the copied address has no missing characters and that the mailbox is still active. Keep the inbox page open and wait a few minutes. Some senders queue activation messages, slow down repeated OTP requests or send mail only after an additional form step. Requesting many codes in a row can make the delay worse by activating sender-side limits.
A second possibility is domain policy. Some websites choose not to send to disposable email domains. TempGo can display messages that reach the active inbox, but it cannot force another service to send a message or change that service's acceptance rules. If a sender blocks a temporary domain and the account is important, use a permanent email address rather than repeating the same request.
Use temporary email only for low-risk tasks. Banking, government services, medical records, purchases and long-term accounts should use an inbox you control permanently. For a simple verification flow, choose enough mailbox time, submit the form once and allow the sender a reasonable delivery window.