  The aim of this note is to explore the interplay between the eikonal
resummation in impact-parameter space and the exponentiation of infrared
divergences in momentum space for gravity amplitudes describing collisions of
massive objects. The eikonal governs the classical dynamics relevant to the
two-body problem, and its infrared properties are directly linked to the
zero-frequency limit of the gravitational wave emission spectrum and to
radiation-reaction effects. Combining eikonal and infrared exponentiations it
is possible to derive these properties at a given loop order starting from
lower-loop data. This is illustrated explicitly in $\mathcal{N}=8$ supergravity
and in general relativity by deriving the divergent part of the two-loop
eikonal from tree-level and one-loop elastic amplitudes.
