Ruby Palace is one of many online gambling sites on the internet. This one happens to be well known for spamming your Gmail account with their various addresses. The other problem is that trying to unsubscribe doesn't always work, although you should try to as this is the best solution. Also note that if you didn't subscribe to their mailing list(s), you should never attempt clicking the unsubscribe link in their emails.
- Install Block Sender for Gmail by clicking the "Install" button found in the upper right-hand corner of this site. The installation won't take long. Open Gmail when it is done.
- After signing up for a Block Sender account and linking your Gmail account to Block Sender, open the unwanted email from Ruby Palace, and click the "Block" button on the messages toolbar.
- Select the "Emails from this sender" option.
Once the spam from Ruby Palace starts, the end of it won't be easy to find. Even if one of their addresses is shut down, they simply make a new one and continue. If this is the case for you then you should select "Emails from this domain" instead, which will block the entire website.