In ~/.muttrc:
set hostname=ircnow.org set editor=nvi set imap_user=user123@ircnow.org set imap_pass="pass123" set folder=imap://$imap_user@imap.ircnow.org set spoolfile=+INBOX set imap_check_subscribed set header_cache=~/.cache/mutt set message_cachedir="~/.cache/mutt" unset imap_passive set imap_keepalive=300 set mail_check=120 set record=+Sent unset record set my_pass="pass123" set my_user='user123@ircnow.org' set realname='user123' set from=user123@ircnow.org set use_from=yes set smtp_url=smtp://$my_user:$my_pass@ircnow.org:587 set ssl_force_tls=yes set ssl_starttls=yes