How to send SMS from qq mailbox to Apple mobile phone?

Qq mailbox how to send SMS operation method is:

Log in to QQ mailbox, find the "Calendar" option in the left ribbon, and click "Calendar". Find a gear icon in the upper right corner. This icon is the setting. Click the Gear setting icon. Drop down in the settings and find "Bind mobile phone number". Click "Bind Mobile Number". At this time, an information window will appear, in which you can send a short message to activate the SMS reminder function, and then send a short message to activate it. It′s on the house. At this point, sending short messages is enabled, so you can edit the letters in the mailbox. Click Send after editing. After successful sending, a reminder interface of successful sending will appear, and click "Open this email to reply to the reminder".