email service for a private domain!

[Mayuresh Kathe]

i own a domain (kathe.in) which i would like to setup for mail services.
essentially, i should be able to log-in over ssh and work through my
emails using mailx.

i have no idea about what is involved and don't know what the search for
via google.

could i be pointed in the right direction?

also, how do i evaluate hosting service providers?
i only know of rootbsd and digitalocean.

thanks.