  We generalize models invoking a spin-2 particle as a mediator between the
dark sector and the Standard Model. We show that a massive spin-2 messenger can
efficiently play the role of a portal between the two sectors. The dark matter
is then produced via a freeze-in mechanism during the reheating epoch. In a
large part of the parameter space, production through the exchange of a massive
spin-2 mediator dominates over processes involving a graviton with Planck
suppressed couplings. We perform a systematic analysis of such models for
different values of the spin-2 mass relative to the maximum and the final
temperature attained at reheating.
