  Using modern multiloop calculation methods, we derive the analytical
expressions for the total cross sections of the processes $e^-\gamma \to
e^-X\bar{X}$ with $X=\mu,\,\gamma$ or $e$ at arbitrary energies. For the first
two processes our results are expressed via classical polylogarithms. The cross
section of $e^-\gamma \to e^-e^-e^+$ is represented as a one-fold integral of
complete elliptic integral $\mathrm{K}$ and logarithms. Using our results, we
calculate the threshold and high-energy asymptotics and compare them with
available results.
