  We study functional stochastic differential equations with a locally
unbounded, functional drift focusing on well-posedness, stability and the
strong Feller property. Following the non-functional case, we only consider
integrability conditions and avoid continuity assumptions as far as possible.
Our approach is mainly based on Zvonkin's transformation [18], an extended
version of the probabilistic approach of Maslowski and Seidler [12] and the
convergence concept for random variables in topological spaces in [2].
