Howdy, How to make in cakephp Please suggest me! what flows needs to be implement this type system?

I have task implement the build the bulk mail system. also implement the user have an select an template so that he can only write mail an send bulk mail.Please suggest flow of this system.
Here is example but i don’t know how can implement in cakephp.
Here is example of the email signature design system.
example 1
Another one example

Email template