;;; smtpmail-async.el --- Send e-mail with smtpmail.el asynchronously -*- lexical-binding: t -*-
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;; Copyright (C) 2012-2016 Free Software Foundation, Inc.
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;; Author: John Wiegley <jwiegley@gmail.com>
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;; Created: 18 Jun 2012
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;; Keywords: email async
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;; X-URL: https://github.com/jwiegley/emacs-async
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; Send e-mail with smtpmail.el asynchronously. To use:
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;;
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;; (require 'smtpmail-async)
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;;
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;; (setq send-mail-function 'async-smtpmail-send-it
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;; message-send-mail-function 'async-smtpmail-send-it)
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;;
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;; This assumes you already have smtpmail.el working.
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;;; Code:
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(defgroup smtpmail-async nil
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"Send e-mail with smtpmail.el asynchronously"
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:group 'smptmail)
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(require 'async)
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(require 'smtpmail)
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(require 'message)
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(defvar async-smtpmail-before-send-hook nil
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"Hook running in the child emacs in `async-smtpmail-send-it'.
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It is called just before calling `smtpmail-send-it'.")
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(defun async-smtpmail-send-it ()
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(let ((to (message-field-value "To"))
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(buf-content (buffer-substring-no-properties
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(point-min) (point-max))))
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(message "Delivering message to %s..." to)
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(async-start
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`(lambda ()
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(require 'smtpmail)
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(with-temp-buffer
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(insert ,buf-content)
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(set-buffer-multibyte nil)
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;; Pass in the variable environment for smtpmail
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,(async-inject-variables
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"\\`\\(smtpmail\\|async-smtpmail\\|\\(user-\\)?mail\\)-\\|auth-sources\\|epg\\|nsm"
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nil "\\`\\(mail-header-format-function\\|smtpmail-address-buffer\\|mail-mode-abbrev-table\\)")
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(run-hooks 'async-smtpmail-before-send-hook)
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(smtpmail-send-it)))
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(lambda (&optional _ignore)
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(message "Delivering message to %s...done" to)))))
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(provide 'smtpmail-async)
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;;; smtpmail-async.el ends here
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