This has been a question that i have been pondering for quite some time. Infact i have faced this problem quite often. Luckily I have found out some solutions which work. I request readers to try out these and let me know your comments.

1. Use a different web address/URL

Instead of using http://mail.google.com use https://mail.google.com

You can also try the following URL’s

http://www.gmail.com or https://www.gmail.com
http://gmail.com or https://gmail.com
http://m.gmail.com or https://m.gmail.com
http://googlemail.com or https://googlemail.com
http://mail.google.com/mail/x/ or https://mail.google.com/mail/x/

2. Configure your email Client to access Gmail A/C (POP Access)

If the above method didn’t work you can try configuring your mail client’s such as Outlook to access Gmail. Google has provided information on how to configure your mail client and the supported POP client list at http://mail.google.com/support/bin/answer.py?answer=12103.

3. Use Google Desktop

Download and install Google Desktop on your PC which bypasses proxies and enables you to access Gmail. This application requires Windows Vista/XP/2000 with SP3+ and has a version for Linux and Mac as well.

4. Use Gmail-lite

Gmail-Lite is a web-based, html-only alternative for accessing Gmail accounts. It provides access to Gmail’s through any simple web browser, irrespective of whether Javascript is enabled or disabled. It can be configured and installed in any web server that supports PHP. So if you have a web site you can download Gmail-Lite  and set it up for use or you can find out websites that have Gmail-Lite installed and use the same. Alternatively can try the following URL’s to access Gmail-Lite.

1. http://www.litemail.eu/
2. http://glite2.sayni.net/
3. http://glite3.sayni.net/
4. http://www.yoyahoo.com/
5. http://www.myglite.com/

PS : These URL’s are not of Google Gmail but are 3rd party services.

Using these URL’s you can login to multiple gmail accounts at the same time.