How to send real estate sales messages in groups?

Real estate sales to achieve the arrival of all notices, need to do three things:

Take the mobile phone number of the person who intends to buy the real estate in this county to the electronic watch and prepare to import it below.

2. Press this film, write the content, import the number, and it will arrive in 8 seconds, and then people will see your message when they take out their mobile phones.