Engtech publishes a good selection of ways to reach your Gmail mailbox if it is blocked at work or at school/university. It is clear that in the case of a competent administrator, this may not help, but it's worth trying.
The first and easiest thing you can try to do is to use a different address. For example, instead of http://mail.google.com you can use https://mail.google.com . Here are some more options:
If none of the addresses helped, you will have to configure the mail client. You can find relevant recommendations for configuring programs in the Gmail Help center:
Google Desktop is a utility for searching the user's hard drives. Its latest versions have acquired features that are usually rarely found in search programs. With the help of Google Desktop, you can reach your mailbox. However, often at work, the security policy generally prohibits the installation of any programs.
You can install an unofficial Gmail Lite application on your server if you have your own website. Actually, Gmail lite was created to provide the user with a simple HTML interface without any AJAX bells and whistles. :) But now many people use it when access to Gmail is blocked for various reasons.
Probably the most effective way :). IT guys take bribes accept gifts.
Using proxy servers (what is it?) — a very effective way to reach a blocked site. As a proxy, Engtech suggests using Google services themselves — Google Translate, Google Web Toolkit.
In addition, you can try your luck with anonymous proxy servers.
[How to access Gmail when it is blocked at work or school]
