Dear Support,
Kindly, I want to make server mail , coz i have more that 200 client so i need to make every client mail from my domain ( private domain ) from same network, and if i need to send message to all client from same network …
Please help me about that if possible …
Maybe I am missing something here, but what does this have to do with routers or wireless? RouterOS is not a mail server.
Dear Provider,
as a provider you should know how to run a mail server.
At least you should know that mikrotik is providing you with a router and this is thus a router support forum, and you also do NOT ask your local car mechani to bring you a pizza JUST because the pizza delivery man happens to use a car, too.
I suggest you get forward reading up what a mail server is (technically) and then grabbing some and installing it. Or using Gmail.
Thank you for all , but i need from Mikrotik send e-mail to all client’s and them have address same network ( private ) i don’t want to use g-mail or another mail , i need same network .
Then install a mail server. Mikrotik is networki infrastructure. It is not YOUR infrastructure. You are supposed to have one. So, install a mail server. Or at least an application sending out emails to your customers.
And 
Realize that what you WANT is not what you get. Mikrotik is not repsonsible for more than handling your routing and access needs. This is their product. The pizza delivery guy also does not run a taxi business.
use a separate linux (or windows) box to setup your services like mail, http server, etc.