## arg 1:  the new package version
post_install() {
		cat <<-'EOM'
		**See https://github.com/mail4one/mail4one for help/support/issues. Quickstart below**
		--------------------------------------------------------------
		**Generate passwordhash**
		    mail4one -g
		**Edit/Create config**
		    cp /usr/share/doc/mail4one/config.sample .
		    # edit config.sample
		    yq -oj -py config.sample | sudo tee /etc/mail4one/config.json
		**Setup certbot and install deploy hook**
		    sudo install -Dm755 /usr/share/doc/mail4one/mail4one_cert_copy.sh -t /etc/letsencrypt/renewal-hooks/deploy
		    # Change domain name here. /etc/letsencrypt/renewal-hooks/deploy/mail4one_cert_copy.sh
		**Enable service**
		    sudo systemctl enable mail4one.service
		==============================================================
		EOM
}