Usually there are only a few reasons why e-mail doesn't work. Please go through these to see.
1) Go to https://webmail.maknet.com and try to login
2) If you can't see this page, you are probably blacklisted.
This is often because you have the wrong password. So the first step is to get your IP address at:
https://www.whatsmyip.org/
And then e-mail it to us so that we can whitelist you. Then go on to the next Step.