Request built in email template

[Thug]

Hi ok let me try to explain this hack
ok seen as i have unlimited pop mail @yourdomain.com email adds i was thinkin of a built in email system into vbulletin where i can offer these email address username@yourdomain.com and they can receive and send emails via a page on the forum,
Features - your style templates ,inbox,outbox everything a email service has and you can give or let them sign up for the email address
have a button on navbar says email,you click that and it has your inbox and stuff,

hope you get what i meen