Once our graphics specialists process your image our servers automatically generate the proof email and send it to the address used to create your Wallhogs account. With the number of different ISP’s and spam filtering software it is difficult to ensure all customers receive this alert. Many times the ISP’s maintain their own spam folder that filters, what they believe, to be spam. In this instance the mail never reaches our customers and we are unable to bypass this issue. We are aware several ISP’s have labeled Wallhogs as spammers and our IT department has attempted to resolve this issue, however once a company is categorized as a spammer it is very difficult to be removed from that list.