7105t - can I use unlimited international email for just one month ? use tethered ?

[mettmann]

Planning on picking up another 7105t at ushopwireless - this time for me - for a quick trip to London in a few weeks. From what I understand - I can "receive" and "send" unlimited emails while I'm in the UK - w/o accruing additional charges - after I'm done with my trip - can I cancel the unlimited intl feature w/o penalty ? (other than the one month charge..)

I searched b4 I asked!!

Thanks!