现在网上留假邮箱的太多，我们可以利用verify-email.org来检测这个邮箱是不是真实的。打开verify-email.org，输入你要验证的邮箱地址，点werify。如果邮箱是真实存在的，就会显示OK，否则提示Bad。
如：
www@lxvoip.com Result: Ok
Log:
MX record about lxvoip.com exists.
Connection succeeded to ASPMX.L.GOOGLE.com SMTP.
220 mx.google.com ESMTP b40si11576462anb.18
> HELO verify-email.org
250 mx.google.com at your service
> MAIL FROM: <check@verify-email.org>
=250 2.1.0 OK b40si11576462anb.18
> RCPT TO: <www@lxvoip.com>
=250 2.1.5 OK b40si11576462anb.18
lxvoip.net@gmail.com Result: Bad
Description: 550-5.1.1 The email account that you tried to reach does not exist. Please try
Log:
MX record about gmail.com exists.
Connection succeeded to alt1.gmail-smtp-in.l.google.com SMTP.
220 mx.google.com ESMTP z9si11552919ank.133
> HELO verify-email.org
250 mx.google.com at your service
> MAIL FROM: <check@verify-email.org>
=250 2.1.0 OK z9si11552919ank.133
> RCPT TO: <lxvoip.net@gmail.com>
=550-5.1.1 The email account that you tried to reach does not exist. Please try