Summarize:

Most web e-mail clients have a filter option that you can use to sieve out messages. Message filters work the same way as spam filters, the only difference is that messages filters are manually set by users. You can create a filter for specific e-mail addresses in such a way that every time you receive a message from that account, it automatically gets directed to the trash bin. To create filters, simply access your account’s e-mail settings and select the “Filter” option. From there you can configure the e-mail address you want filtered out and to what location in your account should the message be diverted to (like the trash bin or a custom folder in your account). If you’re continuously receiving unwanted e-mails from personal e-mail accounts (like those annoying daily jokes you get from your cheerful office or schoolmate), then you may consider filtering them out of your inbox. In this instance, you will probably want to filter messages by the sender's email address. Have your client filter by the email of your choosing, routing all of those messages into a separate folder or even into your junk mail. If spam tends to make it through your email service's natural filters, then you might want to consider setting up your own filter which catches the most common phrases used in the spam you get. In this case, you will want to filter by the content of the subject line of the email.  Example phrases might include "Cialis", "Viagra", or "penis". Be careful not to include phrases that are sometimes good and sometimes bad. For example, you might be tired of emails about sales, but setting the word "sale" as a trigger to send a message to spam is a bad idea. Sometimes you might want to know about a particular sale. Another option is if you don't want to receive any emails with particular content. You can set your filters to browse the content section of an email for key words or phrases, and then reroute those messages elsewhere. This is handy if you're tired of being emailed about a certain hot topic issue, or if you know you'll have a lot of emails coming in about something going on. For example, let's say that you run a clothing company and you just released a new shirt for the hit show "Rainbow Unicorn Fighting Squad". You might want to create a filter that sends all emails about the shirt to a different folder, so that you can deal with those messages without losing sight of important emails in your main inbox.
Consider making your own filter. Filter by sender. Filter by topic. Filter by content.