Model or Library class

Im going to do an Email class for sending emails in my MVC framework. I also have a login class that just checks if the user is in the database.

Should I p开发者_Go百科ut those classes in the library folder or should I implement them as models?

I tried to do search but couldnt find straight answer..

IMHO mailer classes are similar two controllers. They should fetch the data from a model and than render a view (email).

Try this reference and see if it helps you.