val compose :
  ?in_charset:Netconversion.encoding ->
  ?out_charset:Netconversion.encoding ->
  ?from_addr:string * string ->
  ?cc_addrs:(string * string) list ->
  ?bcc_addrs:(string * string) list ->
  ?content_type:string * (string * Mimestring.s_param) list ->
  ?container_type:string * (string * Mimestring.s_param) list ->
  ?attachments:Netmime.complex_mime_message list ->
  to_addrs:(string * string) list ->
  subject:string -> string -> Netmime.complex_mime_message
val wrap_attachment :
  ?in_charset:Netconversion.encoding ->
  ?out_charset:Netconversion.encoding ->
  ?content_id:string ->
  ?content_description:string ->
  ?content_location:string ->
  ?content_disposition:string * (string * Mimestring.s_param) list ->
  content_type:string * (string * Mimestring.s_param) list ->
  Netmime.mime_body -> Netmime.complex_mime_message
val wrap_mail :
  ?in_charset:Netconversion.encoding ->
  ?out_charset:Netconversion.encoding ->
  ?from_addr:string * string ->
  ?cc_addrs:(string * string) list ->
  ?bcc_addrs:(string * string) list ->
  to_addrs:(string * string) list ->
  subject:string ->
  Netmime.complex_mime_message -> Netmime.complex_mime_message
val wrap_parts :
  ?in_charset:Netconversion.encoding ->
  ?out_charset:Netconversion.encoding ->
  ?content_type:string * (string * Mimestring.s_param) list ->
  ?content_id:string ->
  ?content_description:string ->
  ?content_location:string ->
  ?content_disposition:string * (string * Mimestring.s_param) list ->
  Netmime.complex_mime_message list -> Netmime.complex_mime_message
val create_address_list_tokens :
  ?in_charset:Netconversion.encoding ->
  ?out_charset:Netconversion.encoding ->
  (string * string) list -> Mimestring.s_token list
val create_text_tokens :
  ?in_charset:Netconversion.encoding ->
  ?out_charset:Netconversion.encoding -> string -> Mimestring.s_token list
val format_field_value : string -> Mimestring.s_token list -> string
val sendmail :
  ?mailer:string -> ?crlf:bool -> Netmime.complex_mime_message -> unit