email_message.email_address
Map.Key
email_message
type t = t
val sexp_of_t : t -> Ppx_sexp_conv_lib.Sexp.t
include Core_kernel.Comparator.S with type t := t with type comparator_witness = comparator_witness
type comparator_witness = comparator_witness
val comparator : (t, comparator_witness) Base.Comparator.comparator