this code is for one [ my ] email id only
replace my email id, smtp, etc..
code is available also @_ https://lists.gnu.org/archive/html/help-gnu-emacs/2023-09/msg00142.html
~ /.emacs
;; pop3
(require 'smtpmail)
(require 'rmail)
(setq user-mail-address "jindam@list.ru")
(setq user-full-name "జిందం వాఐి")
(setq smtpmail-smtp-user "jindam@list.ru"
smtpmail-smtp-server "smtp.mail.ru"
smtpmail-smtp-service 465
smtpmail-stream-type 'ssl)
(setq
rmail-preserve-inbox 1 ; Don't delete mail from server
rmail-mail-new-frame 1 ; Compose in a full frame
rmail-delete-after-output 1 ; Delete original mail after copying
rmail-mime-prefer-html nil ; Prefer plaintext when possible
rmail-file-name "~/mail/inbox" ; The path to our inbox file
rmail-secondary-file-directory "~/mail" ; The path to our other mbox files
message-default-headers "Fcc: ~/mail/sent") ; Copy sent mail to the "sent" file
;; Debug
(setq smtpmail-debug-info t)
(setq smtpmail-debug-verb t)
;; html
(setq
shr-use-fonts nil ; Don't load fancy fonts
shr-indentation 2 ; A left-margin of 2 columns
shr-use-colors nil ; Don't load special colors
shr-width 32 ; Fix width to 70 columns
shr-bullet "• ") ; A bullet character for <li> elements
;; tls
(setq rmail-movemail-flags "--tls")
;; Use Mail mode to compose messages (default)
(setq mail-user-agent 'sendmail-user-agent)
;; If you're using rmail
(setq read-mail-command 'rmail)
;;(setq rmail-primary-inbox-list
;; (cons (concat "pop3://"
;; "jindam@list.ru"
;; "@pop.mail.ru") nil))
(setq
;; The mail URL, specifying a remote mail account
;; (Omit this to read from /var/mail/user)
rmail-primary-inbox-list
'("pops://jindam@list.ru@pop.mail.ru"))
```</li>