Gmail Tips and Tricks

http://www.makeuseof.com/tag/ultimate-gmail-collection-over-80-tools-and-tips/     Tools which can be used with Gmail – I 

http://www.makeuseof.com/tag/gmail-craze-30-tools-to-make-your-gmail-better/    Tools which can be used with Gmail -II

http://www.comp.nus.edu.sg/~kanmy/gmail/gmailKeys.html        Gmail  Keyboard Shortcuts

http://labnol.blogspot.com/2005/12/cheat-gmail-antivirus-scanner-attach.html  Sending Attachment

http://www.z-oc.com/blog/2007/06/manage-all-your-email-accounts-with-gmail/  Managing muliple gmail account