We would definitely recommend opening a separate bank account and email address for Matched Betting.
This will allow you to not only keep an eye for all of the offers that you will get via email, but can also track all of your deposits and withdrawals with ease.
A high street bank is recommended as instant withdrawals are often available, meaning you can get on with the next offer straight away.
In regards to the email address, be sure not to use the word 'bets' or 'matched betting' or 'offers' etc in it, as this will not look great to the bookmakers.