New returns a new address based upon the provided name and domain.

Split takes an address, of the form "name*domain" and provides the constituent elements.

Separator seperates the name and domain portions of an address.

ErrInvalidAddress is the error returned when an address is invalid in such a way that we do not know if the name or domain portion is at fault.

ErrInvalidDomain is the error returned when an address's domain portion is invalid.

ErrInvalidName is the error returned when an address's name portion is invalid.