貌似是从 WordPress 4.6 开始,只要网站的用户修改了密码,都会给管理员发送邮件通知:

如果要禁用这个通知的话,还是只能通过插件的方式来实现,因为如果在主题代码中添加函数代码的话,无法覆盖WP核心的这个功能,也就是只有通过插件才有优先权来覆盖。那么实现方法也很简单了,直接在后台插件安装界面搜索 Disable Password Changed Notifications 在线安装后激活即可生效。
来源:
https://www.wpdaxue.com/disable-password-changed-notifications.html
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