用LiveHTTPHeaders(http://livehttpheaders.mozdev.org)做了一個比較：發現GMail比Yahoo!Mail和LiveMail快還 有原因 .

從輸入域名, 到登錄完成進入郵箱 HTTP請求次數（已經保存密碼自動登錄）：
9 gmail.log
19 hotmail.log
34 ymail.log

GMail 請求：9次


GET /mail/
GET /mail/
GET /mail/
GET /mail/im/dropupdown.gif
GET /setgmail
GET /mail/
GET /mail/
GET /mail/
GET /mail/

Live Mail 請求：19次, 其中7個廣告相關 請求

GET /mail/mail.aspx
GET /mail/Bootstrap_11.08.0100.0011.aspx
GET /mail/loading_11.08.0100.0011.aspx
GET /mail/ApplicationMain_11.08.0100.0011.aspx
GET /c.gif
POST /mail/mail.fpp
GET /mail/stylesheet_11.08.0100.0011.aspx
GET /mail/11.00/theme0/thumbn.gif
GET /mail/11.00/theme7/thumbn.gif
GET /ADSAdClient31.dll
GET /ADSAdClient31.dll
POST /mail/mail.fpp
GET /mail/11.00/theme6/thumbn.gif
GET /ADSAdClient31.dll
GET /mail/11.00/theme4/thumbn.gif
GET /ADSAdClient31.dll
GET /main/adfshow
GET /main/adfshow
GET /msnms/20061025/Hotmail(China)today_Rectangle_300_250_20k.swf

Yahoo!Mail（Beta版）：34次


GET /
GET /b
GET /search
GET /yab/cache/cn/w85nP6Cx_z657_m9Yyg9Aw--
POST /ws/mail/v1/soap
POST /rss/Content/V3.0/getUserFeedData
POST /ws/mail/v1/soap
GET /dc/fc
GET /ws/cal/w85nP6Cx_z657_m9Yyg9Aw--/v0.1/event
GET /a
GET /a
GET /b
GET /a
GET /candygram/welcome/
GET /b
GET /a
GET /a
GET /img/loginrec.htm
GET /candygram/welcome/