Filtering Email
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Note most of this applies to Outlook Express but can often be easily adapted to other mailers. If you currently do not use a mailer, most Internet Explorer versions from 5.x up have Outlook Express available. If you perfer not to use Outlook Express, there are several other mailer about and most can be found on www.tucows.com by typing in mailers or email clients in the site search arguement.

This page was placed here recently to assist those who may use a POP3 email server and find the amount of unsolictited email unacceptable. Note that you should likely NEVER reply to the return address on any remove me link as it just tells the spammer that you are there and have read at least that email. Unless the company is one you can recall asking for email from such as a news letter or something then it is my advice and opinion it is best to block them instead of asking for them to stop mailing things to you. Lets talk about what Email Spam is and how it works so you can understand how to try to limit your having to handle it.

First thing to understand is bulk mailers treat it as a business which it is for them. They get paid on a per hundred or per thousand email sent basis usually. So they are always looking for email addresses. They obtain these addresses from little tricks and also purchase them from each other. The tricks include small programs or other functions they may provide online and then once they have an email address for you, they can include it in the ones they bulk mail to. So that game you downloaded that you played once and decided it was nothing worth having but it prompted you to register an email address just gave the spammer your address. Do not think that pretty large and impressive looking websites are above this either. Just because a site is impressive to look at or has a lot of information do not think it means they are not above selling your email address to someone they know or are partnered with. Once someone else has it they can and often do sell it themselves to someone else. So that soon you are getting sex site spam and everything else. So the first line of defence is to set up a spam box ideally. This is a HTTP based email address on a server. Most any search engine allows you a email address and most are HTTP for free. Pick one and set it up then use that email address to send to anyone you are not 110% sure will not share your email address with mail spammer operations. This would be the best possible first line of defence against being spammed. However like most of us, this ship has already sailed. So we move onto the second choice... Oh did I mention the email spammers often use dead end type email boxes. They often set them up through proxy servers to hide who or where they are sending it from as well. In this way the effectiveness of blocking the email ID they use or trying to complain about them sending you email is pretty ineffective in most cases. In most cases if you apply to remove yourself from their mail list you will get a stuffed email box, a box that does not exist, or worse still a server with a form that will in most cases just add your email address to the group they know someone has that address for sure and it is active. Also opening email spam often adds to the problem. You see like many websites email spam has what is know as web bugs added to them. These are graphic files ( usually gifs with cookies ) that are included with the HTML content you get in the spam. Using text only ( plain text only email accepted ) will greatly limit this as well a virus content on email. I also strongly suggest very current antivirus software anyway that scans anything you get in by way of email.

If you have an HTTP email aside from hotmail.com it is likely a web based email. Few other HTTP mail servers exist as far as I can tell and I have only found hotmail to offer mailer operation of them. It could be that there are other mailers around that could operate HTTP type mailboxes. If so I am not aware of them but this should not stop you from looking if you wish to retain an HTTP based email service you are with. Most mailers however I know of are SMTP ( POP3 ) type mailers. Depending on the mailer used most have a filter option in place. On Outlook Express it is called Message Rules. Before we move on to this too deeply it is important to mention that you should set up some degree of security with your mailer. Make sure your virus scanner scans all incoming email and attachments. Some would even suggest you set the mailer to not accept attachments. I suggest you set it to not preview them at the very least. In fact you can use the Message rules to set up a folder solely for attachments to be placed in so that any attachment sent there should be harder to accidently open. The reason why I suggest this is the number one way to get a virus on your system is by way of email attachment. The best way to stop it is to not accept any attachments however this tends to prevent pictures, audio and video email from getting to your system. If you wish to you can also set up the message rules on Outlook Express to leave any attachments on the server so that you can decide if you wish to download them.

Ok enough already about the Message Rules and what they can do, tell me how to use them! Well this is going to take a bit of thinking on your part. I am not going to be able to tell you what rules will work for you. You must set up what you wish to limit. It is however shockingly easy to access. Start up your mailer ( assuming you have the mailer already set up to get your email from the mail server you use ) and cycle it to get any new email you may have. You will need a message or spam ideally to start this process, and these instuction will be for Outlook Express so if you are using other software you may have to look about a bit to see how to do the same thing. Click or otherwise highlight the header in the inbox of the spam you wish to block, limit or otherwise prevent from being seen anymore. Then click MESSAGE at the top of the Outlook Express tool bar. You should then see Block sender and Create Rule from Message. Blocking sender will just prevent the person who sent you this email ( at this email address ) from sending you anymore emails. If they change their email address they can send the message again. Create Rule from Message offers several options. I suggest this as a better fix in most cases. You must however be mindful of the fact of what your rules are and not to make too many different rules. ( you can amend rules also so there is little point in having 50 or 60 message rules as it just slows down your mailer operation and likely will make it less useful to use rules at all ) I generally suggest you try to limit your message rules to less than 10 or 12 rules. I will provide the instuctions on how to make two basic rules I use here and you can work from them to make what you would like to do in the case if your email.

Attachments:
  • highlight a message ( it does not need to have an attachment to do this )
  • click on Message on the Outlook Express toolbar
  • select Create Rule from Message
  • check only the box that says "if Message has an Attachment"
  • then you can either select move message to a folder or leave message on server or flag message or any other option you may wish.
  • click ok when you are done, you should get a notice that message rule was successfully added.

I would normally suggest making a new folder for these and calling it attachments. This should then move the message with the attachment to that folder and not leave it in your in box. Then you can use caution in opening such messages as you see fit such as only opening them offline and with virus scanner active or what have you. If you have a problem with people sending you virus payloads you may wish to just leave these on the server. It should in most cases download the header of the message so you know they are there but not allow the payload to be placed on your system. If you have a problem with hidden payloads you may wish to move them to an attachment folder and then start a program like AnalogX Script Defender before you open of the message content found there which should prevent any scripts from being run without asking your permission first.

Blocking with Subject Strings:
  • hightlight a message ( it does not have to be of the subject you wish to limit )
  • click on the Outlook Express toolbar
  • select create rule from message
  • check box that says if subject line contains the following word(s) - if you wish to you can also have it scan the message body but if you leave the check in the from line it will only work when it is from this one sender.
  • then check what you wish to do with the message that has a match to the word string. You can delete it, move it to another folder, leave it on the server, even delete it at the server without downloading it. You can even move all messages that contain say "FWD" in them to a folder you can title Forwards or something like this. There are countless options.

This is why I said I can show you the process of how to do this but you will have to construct it as you would wish it to be. There is however a few more things to say.

Most of these items work on POP3 mail servers with Outlook Express. I cannot speak to what the limits or functions are on other programs. Outlook Express does NOT apply message rules to hotmail. You must use the filter on the hotmail site to limit spam on hotmail. ( it is pretty effective except on Microsofts own spam of course if you set it to the highest setting ) Most mail servers have a server based filter also which you can set up more or less using the same general guidelines as I have mentioned above. As with any filter however you can find yourself filtering out some email you would wish to read. Keep in mind that you should mention to people you talk to you are filtering your email and how so they will know what to avoid sending and getting caught in the mail filter.

If you wish to edit the message rules you have made it is not hard to do that either. ( it is also why you would see I mentioned to keep your message rule count low ) To edit them go to Outlook Express's TOOLBAR and select TOOLS then Editi Message Rules, then select Mail in most cases. You will be shown Message Rule 1 through whatever number you have. You can edit them or delete them or move them up or down the list as to where you wish to have them applied. Note that the higher up the list the sooner the rule will be applied. ( so if you have attachments at the top of the list it would move any attachment to your attachment folder say and not delete it from the server if you had that as a rule but further down the list ) With some practice and a bit of thinking most can get a pretty effective set of Message rules in place that will GREATLY limit the amount of spam you have to deal with.


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09-12-2002