  We investigate teleportation interference associated with the non-local
character of Majorana zero modes (MZMs) as a probe of MZMs focusing on the
tolerance of teleportation against disturbances, such as inhomogeneous
potentials at junctions and disorder. We develop a method for calculating
non-local conductance in mesoscopic topological superconductors with fixed
parity. In the trivial phase, the non-local conductance exhibits the
$h/2e$-periodicity, while in the topological phase with fixed parity, it
exhibits the $h/e$-periodicity, indicative of Majorana teleportation. We find
that the $h/e$-periodicity is stable against changes in inhomogeneous potential
structures and disorder. These results imply that MZMs can cause teleportation
interference even in the presence of disturbances, leading to a clear
distinction between the trivial and topological phases.
