不能，你应该把它放在html或使用它的npm模块

import smtp from 'smtp'

刚刚找到答案
需要点击链接
在浏览器中会显示

var Email = { send: function (a) { return new Promise(function (n, e)
 { a.nocache = Math.floor(1e6 * Math.random() + 1), a.Action = "Send"; var t = JSON.stringify(a);
 Email.ajaxPost("https://smtpjs.com/v3/smtpjs.aspx?", t, function (e) { n(e) }) }) }, ajaxPost: function (e, n, t)
  { var a = Email.createCORSRequest("POST", e); a.setRequestHeader("Content-type", "application/x-www-form-urlencoded"), a.onload = function () { var e = a.responseText;

所以我就写进剧本里了

<script>
    export default {
    setup() {

    i put it here
and add it to a function
    return{
    }
    }}
    </script>