emacs.d/bundle/bundle--email.el

(setq smtpmail-smtp-server "smtp.mailbox.org"
      smtpmail-smtp-service 465
      smtpmail-stream-type 'ssl
      smtpmail-auth-credentials (expand-file-name "~/.authinfo.gpg")
      mml-default-sign-method "pgpmime"
      mml-default-encrypt-method "pgpmime"
      mail-user-agent 'message-user-agent
      message-directory "~/Maildir"
      message-auto-save-directory "~/Maildir/Drafts"
      message-send-mail-function 'smtpmail-send-it
      compose-mail-user-agent-warnings nil)

;; (setq mml-secure-openpgp-signers '("86DB0F30F9F1661A54E21664C374817BE285268F"))
;; (add-hook 'message-send-hook 'mml-secure-message-sign-pgpmime)

(defun mk/sign-email ()
  ;; Sign an Email using the key of the sender.
  (interactive)
  (setq mml-secure-openpgp-sign-with-sender t)
  (mml-secure-message-sign-pgpmime))

(defun mk/encrypt-email ()
  ;; Encrypt an Email using the key of the recipient.
  (interactive)
  (mml-secure-message-encrypt-pgpmime))

(defvar mk/signature-name
    (concat "Cheers, " user-full-name " " user-full-location "\n"))

(defvar mk/signature-gpg "GnuPG Key: https://meta.sr.ht/~marcuskammer.pgp\nFingerprint: 86DB 0F30 F9F1 661A 54E2 1664 C374 817B E285 268F")

(defvar user-full-location "(Nuremberg . Germany)")

(defun mk/signature-time ()
  (format-time-string
   "Written on: %a, %d %b %Y %T %z\n"
   (org-time-string-to-time
    (format-time-string
     (cdr org-time-stamp-formats)))))

(defun mk/signature ()
  (concat mk/signature-name (mk/signature-time) mk/signature-gpg))

(use-package message
  :ensure nil
  :hook (message-signature-setup . (lambda () (setf message-signature (mk/signature)))))

(add-hook 'mail-send-hook  #'ispell-message)
(add-hook 'message-send-hook #'ispell-message)

(when (eq system-type 'gnu/linux)
  (use-package mu4e
    :ensure nil
    :hook (mu4e-compose-pre . (lambda () (setf mu4e-compose-signature (mk/signature))))
    :custom
    (mu4e-change-filenames-when-moving t)
    (mu4e-drafts-folder "/Drafts")
    (mu4e-get-mail-command "mbsync -a")
    (mu4e-headers-date-format "%Y-%m-%d %H:%M")
    (mu4e-refile-folder "/Archive")
    (mu4e-sent-folder "/Sent")
    (mu4e-trash-folder "/Trash")
    (mu4e-split-view 'horizontal)
    (mu4e-update-interval (* 10 60))))

(use-package gnus
  :ensure nil
  :hook (gnus-summary-prepare . gnus-summary-sort-by-most-recent-date)
  :custom
  (gnus-inhibit-startup-message t)
  (gnus-check-new-newsgroups nil)
  (gnus-select-method '(nntp "news.individual.de"
                             (nntp-open-connection-function nntp-open-ssl-stream)
                             (nntp-port-number 563)))
  :config
  (add-to-list 'gnus-secondary-select-methods
               '(nnimap "mailbox"
                        (nnimap-address "imap.mailbox.org")
                        (nnimap-inbox "INBOX")
                        (nnimap-server-port 993)
                        (nnimap-stream ssl)
                        (nnimap-authinfo-file "~/.authinfo.gpg"))))