module Smtp_server : sig ... end
module Smtp_client : sig ... end
module Address = Types.Address
module Smtp_credentials = Types.Credentials
module Smtp_spool = Spool
module Smtp_rpc_intf = Rpc_intf
module Smtp_events = Smtp_events
module Email = Email_message.Email
module Email_address = Types.Email_address
module Email_headers = Email_message.Headers
module Multispool = Multispool
module Smtp_envelope = Types.Envelope
module Smtp_envelope_with_next_hop = Types.Envelope_with_next_hop
module Smtp_envelope_selector = Envelope_selector
module Smtp_session = Types.Session
module Smtp_reply = Types.Reply
module Smtp_sender = Types.Sender
module Smtp_sender_argument = Types.Argument
module Smtp_command = Types.Command
module Smtp_mail_log = Mail_log
module Simplemail = Simplemail