You can search for identifiers within the package.
in-package search v0.2.0
val sender : unit -> string Lwt.t
val username : unit -> string Lwt.t
val password : unit -> string Lwt.t
val hostname : unit -> string Lwt.t
val port : unit -> int option Lwt.t
val start_tls : unit -> bool Lwt.t
val ca_path : unit -> string option Lwt.t
val ca_cert : unit -> string option Lwt.t
val console : unit -> bool option Lwt.t