Mail 2000 com tw
You're looking for the Taiwan country code top-level domain (ccTLD) for email addresses!
The ccTLD for Taiwan is .tw.
So, if you want to create an email address with a .tw domain, you would use the format:
Where username is the desired username for your email address.
For example:
Note that you'll need to register the domain name mail.tw with a registrar and set up a mail server to receive and forward emails to the desired recipient.