automatically Send Email In Mvc

There is no continuous running process in web applications. While it is possible to implement it, it is not guaranteed to succeed. 

 

As such, typically, under such circumstances, it is generally recommended that you write a Console application (if you need a business logic to implement in C#) and schedule a task or write a stored procedure (applicable in your particular case) and schedule it as a job on SQL Server. This is a simplest solution.