Poker site asking for photocopied proof of i.d. before withdrawal???

[theordinaryboy]

No poker comment but i didnt know where else to post this.

i received an email from a poker site i've been playing on for a while and they have said that because i have deposited with an unverified card recently i must send a photocopy of my drivers license or passport, my credit card and proof of address.

Is this normal? i have not done this before and am not too willing to hand over these details in particular over an insecure email.

Am i being too cautious or is this not right?