Gmail 20 周年纪念：从不被看好，到成为最多人使用的 E-mail 产品
https://www.theverge.com/24113616/gmail-email-20-years-old-internet
https://www.theverge.com/24113616/gmail-email-20-years-old-internet
The Verge
20 years of Gmail
Will it still be here in another 20 years?
