val send : ?sender:string ‑> ?subject:string ‑> ?cc:string list ‑> ?bcc:string list ‑> ?reply_to:string list ‑> ?content_type:string ‑> ?message_id:string ‑> ?in_reply_to:string ‑> ?auto_generated:unit ‑> recipients:string list ‑> string ‑> unitmodule Deprecated_use_async_smtp_std_simplemail : sig ... end