I have used a variety of email clients from Thunderbird, foxmail to outlook to Lightning mail, and because I am not a heavy user of email, I feel that it is unnecessary to open a client, so I finally found a tool to make Firefox browser into a mailbox client.
Firefox browser
simple mail
Download Firefox and find the add-on: simple mail add-on and install it. Or look for the plugin to install in Firefox Plugin
After restarting the browser, click the drop-down triangle next to the icon and select: Option
This time, take the outlook mailbox that cannot be added by other similar plug-ins as an example to set pop3 and smtp. The account is an outlook email account and password.
Log in to outlook Email and enable pop in Settings
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The pop3 and smtp addresses and ports of common mailboxes are added in the same way as the above.
@Gmail POP3 server address: pop.gmail.com Port: 995 SMTP server address: smtp.gmail.com Port: 465
@qq.com: POP3/SMTP protocol Receiving mail server: pop.exmail.qq.com (port 110), using SSL, port 995 sending mail server: smtp.exmail.qq.com (port 25), using SSL, port 465 or 587 IMAP protocol to receive mail server: imap.exmail.qq.com (port 143), using SSL, port 993 to send mail server: smtp.exmail.qq.com (port 25), using SSL, port number 465 or 587
@163.com POP3 server address: pop.163.com SMTP server address: smtp.163.com
@126.com POP3 server address: pop3.126.com SMTP server address: smtp.126.com
@yeah.net POP3 server address: pop3.yeah.net SMTP server address: smtp.yeah.net
@sina.com POP3 server address: pop3.sina.com.cn SMTP server address: smtp.sina.com.cn
@sohu.com POP3 server address: pop3.sohu.com SMTP server address: smtp.sohu.com
@tom.com POP3 server address: pop.tom.com SMTP server address: smtp.tom.com
@263.net POP3 server address: pop.263.net SMTP server address: smtp.263.net
@21cn.com POP3 server address: pop.21cn.com SMTP server address: smtp.21cn.com SMTP server address: imap.21cn.com
Make sure to enable the POP3/SMTP function of the relevant mailbox