{
    "add-lines": [
        {
            "file": "config/packages/notifier.yaml",
            "position": "after_target",
            "target": "        texter_transports:",
            "content": [
                "            postmark: '%env(MAILER_DSN)%'"
            ]
        }
    ],
    "env": {
        "#1": "MAILER_DSN=postmark://ID@default"
    }
}