There is a simple way that will let you use the same email address with all your Twitter handles – the only condition is that you should be using a Gmail or Google Apps email address.
In Gmail, you can add a dot (.) anywhere in the username and all emails address to that new alias will still reach your mailbox. For instance, if your original email address is hello[@]gmail.com, any emails sent to he.llo[@]gmail.com or he.ll.o[@]gmail.com will land in your mailbox because Gmails ignores periods in the email username.
And that’s what you can use to trick Twitter. Twitter will consider hello[@]gmail and he.llo[@]gmail as two separate and valid email addresses even though they point to the same Gmail Inbox.
Please do that note that you have to enable the catch-all option in your domain setting to use email aliases inside Google Apps. Thus it is a better option to use a free Gmail address for Twitter.