Why can't I find the re-verify button after adding or editing an email?

After adding or modifying an email address in [My Account], the system will send a verification letter to the email address. You can go to the mailbox to receive and verify it. If you have not received the verification letter, you can go back to [My Account] and click the "Resend Verification Letter" button. If you do not see the "Resend Verification Letter" button, it means that you have completed the verification.