Some other not well known features....
The ability to use + and other characters in your email address and it will still send to your account. For instance, if I sign up on Amazon, I will use firstname.surname+amazon@gmail.com and it will send emails to my account. This is especially useful because you can then monitor where your spam is being sent to. You will then know who the culprit is who sold your information. Also, this is useful for setting up labels. For instance, I might set up a filter that labels anything coming from a Mac website by using first.secondname+mac@gmail.com, and have it automatically archive those emails so they are out of the way... every time I register for a Mac site for instance, I will use the +Mac address.
Another little hint is that it supports the full stop (period) anywhere in the address. For instance, you can send an email to
macforums@gmail.com,
mac.forums@gmail.com,
ma.cforums@gmail.com etc and they will all go to
macforums@gmail.com...
As for Hotmail, well, MSN know they have a weak product, and are currently in beta stage for their new version of it, codenamed "Kahuna". The interface looks nice, and offers a widescreen 3 pane view a la Outlook. It means you can check your inbox and individual messages all on the same screen without having to refresh the page to load up the message... its pretty nice..
And I have to mention the new Yahoo Beta again... it WILL offer a serious threat to Gmail... its basically an email CLIENT, but web based... it even offers right clicking and drag n drop...
I badly want Google to implement a calendaring service to integrate with Gmail... it would be great if they could do it using the same AJAX technology they use with Gmail...