  We consider low-energy tests of low-scale leptogenesis based on the type I
seesaw scenario with three right-handed singlet neutrinos $\nu_{l R}$. In this
scenario, successful leptogenesis is possible for quasi-degenerate in mass
heavy Majorana neutrinos $N_{1,2,3}$, $M_{1,2,3}\cong M$, $|M_j - M_i|\ll M$,
$i\neq j = 1,2,3$, heavy Majorana neutrino masses $M \sim (0.05 - 5\times
10^5)$ GeV, and $N_j$ charged current and neutral current weak interaction
couplings as large as $\mathcal{O}(10^{-2})$. We derive the constraints on the
corresponding leptogenesis parameter space from the existing data from
low-energy experiments, including the limits from the experiments on $\mu
\rightarrow e \gamma$ decay and on the rate of $\mu - e$ conversion in gold. We
show also that the planned and upcoming experiments on charged lepton flavour
violation with $\mu^\pm$, MEG II on the $\mu \rightarrow e\gamma$ decay, Mu3e
on $\mu \rightarrow eee$ decay, Mu2e and COMET on $\mu - e$ conversion in
aluminium and PRISM/PRIME on $\mu - e$ conversion in titanium, can probe
significant region of the viable leptogenesis parameter space, and thus have a
potential for a discovery. Experiments on $\tau \to eee(\mu\mu\mu)$ and $\tau
\to e(\mu)\gamma$ decays (e.g., BELLE II) also can probe a part of the
leptogenesis parameter space, although a relatively small one.
