module type Mech = Async_smtp__.Auth.Client
include sig ... end
val sexp_of_t : t ‑> Base.Sexp.t
val anon : t
val login : ?on_behalf_of:string ‑> username:string ‑> password:string ‑> unit ‑> t
val allows_anon : t ‑> bool
val get_auth_client : t ‑> tls:bool ‑> Async_smtp_types.Smtp_extension.t list ‑> [ `Anon | `Auth_with of (module Mech) ] Core.Or_error.t
module Stable : sig ... end