Qq mailbox can't receive Facebook verification code

Qq mailbox cannot receive verification code under the following circumstances:

1. Due to delay and other reasons, the verification code has not been released.

In this case, you can refresh the webpage or try sending it again later.

2. The verification code has been received, but the mailbox server judges that it is spam and automatically transfers it to the trash can.

In this case, you can check whether there is a record in the self-service query on the home page of the mailbox.

If you can't find the verification code in the above methods, you can click resend or send it to another mailbox in the interface.

Verification code is the abbreviation of Turing test to distinguish between computer and human, and it is a public automatic program to distinguish between computer and human.

It can prevent malicious password cracking, ticket brushing and forum flooding, and effectively prevent hackers from constantly trying to log in to specific registered users by violently cracking specific programs. In fact, using verification code is a popular way for many websites now, and we have realized this function in a relatively simple way. This problem can be generated and judged by computers, but only humans can solve it. Because the computer can't answer CAPTCHA's question, the user who answers the question can be regarded as a person.