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### 3.8 Sending Variables

`message-fcc-handler-function`
  A function called to save outgoing articles. This function will be called with the name of the file to store the article in. The default function is `message-output` which saves in Unix mailbox format.
`message-courtesy-message`
  When sending combined messages, this string is inserted at the start of the mailed copy. If the string contains the format spec ‘`%s`’, the newsgroups the article has been posted to will be inserted there. If this variable is `nil`, no such courtesy message will be added. The default value is ‘`"The following message is a courtesy copy of an article\\nthat has been posted to %s as well.\\n\\n"`’.
`message-fcc-externalize-attachments`
  If `nil`, attach files as normal parts in Fcc copies; if it is non-`nil`, attach local files as external parts.
`message-interactive`
  If non-`nil` wait for and display errors when sending a message; if `nil` let the mailer mail back a message to report errors.
`message-confirm-send`
  When non-`nil`, Gnus will ask for confirmation when sending a message.