如何让 XAMPP 在本地使用 php 的 mail() 函数，这样我就可以在本地测试我的 mail() 脚本而无需上传到我的服务器?

Things I have done but have not worked: (through various existing tutorials online)

1. 已安装 XAMPP(已成功安装，因为我已经将它用于我的其他工作)
2. 为 XAMPP 安装 Mercury
3. 在水星中

<小时>

a. click on Configuration -> Manage Local Users
b. Create New User

<小时>

          Username: **root**
          Password: **root**
c. click on Configuration -> Mercury SMTP
d. make the following changes

<小时>

          IP Interface to use: **127.0.0.1**
          Listen to TCP/IP port: **25**
          Announce Myself as: **127.0.0.1**
e. click on Configuration -> Mercury POP 3
f. make the following changes

<小时>

          Listen to TCP port: **110**
          IP Interface to use: **127.0.0.1**
g. click on Configuration -> MercuryE SMTP client Configuration
h. make the following changes

<小时>

          Identify Myself as: **127.0.0.1**
          Name server: **127.0.0.1**
i. click on Configuration -> Mercury D pop3 client
j. make the following changes

<小时>

          POP3 Host: **127.0.0.1**
          Username: **root**
          Password: **root**

4.安装雷鸟 35. 在雷鸟中

a. click on Tools -> Account Settings
b. In Account Settings

    i. click on Account Actions -> Add Mail Account
    ii. In Add Mail Account

        Your name: **root**
        Email address: **root@localhost.com**
        Password: **root**
    iii. click next
    vi. under Editing Config set as following

        Username: **root**
        Incoming: 127.0.0.1   POP/IMAP
        Outgoing: 127.0.0.1   SMTP
    v. click Create Account
c. send test mail to myself (this part doesn't work for me, it says mail sent successfully but when I check inbox in Thunderbird, there is no mail.)