Add mailpit (ct) (#16942)

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>

install/mailpit-install.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: MickLesk (CanbiZ)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://mailpit.axllent.org/
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+fetch_and_deploy_gh_release "mailpit" "axllent/mailpit" "prebuild" "latest" "/opt/mailpit" "mailpit-linux-$(arch_resolve).tar.gz"
+
+msg_info "Configuring Mailpit"
+mkdir -p /opt/mailpit/data
+cat <<EOF >/opt/mailpit/.env
+MP_DATABASE=/opt/mailpit/data/mailpit.db
+MP_UI_BIND_ADDR=0.0.0.0:8025
+MP_SMTP_BIND_ADDR=0.0.0.0:1025
+MP_DISABLE_VERSION_CHECK=true
+EOF
+msg_ok "Configured Mailpit"
+
+msg_info "Creating Service"
+cat <<EOF >/etc/systemd/system/mailpit.service
+[Unit]
+Description=Mailpit Email Testing Server
+After=network.target
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory=/opt/mailpit
+EnvironmentFile=/opt/mailpit/.env
+ExecStart=/opt/mailpit/mailpit
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+systemctl enable -q --now mailpit
+msg_ok "Created Service"
+
+motd_ssh
+customize
+cleanup_lxc