Function to delete a given message by id. This cannot be undone!
gm_delete_message(id, user_id = "me")Other message:
gm_attachment(),
gm_import_message(),
gm_insert_message(),
gm_messages(),
gm_message(),
gm_modify_message(),
gm_save_attachments(),
gm_save_attachment(),
gm_send_message(),
gm_trash_message(),
gm_untrash_message()
if (FALSE) { # \dontrun{
gm_delete_message("12345")
} # }