These instructions only apply to free 100 MB email accounts and 5 GB corporate email accounts.
To access webmail, you have two options:
1. Go to webmail.yourdomain.com (replace yourdomain.com with your domain name). This will only work if the logs are configured as per this article: http://clickpanda.com/knowledgebase.php?action=displayarticle&id=133
2. Go to webmail.clickpanda.com, then you can type your email account credentials.
If everything works fine, you should see this interface:
If you have questions, or require additional help customizing a URL, you can open a support ticket.