I am convinced that many of us can use this information in regards to Email filtering due to content.

Spam folder/content filtering (when an email ends up in the junk/spam folder instead of inbox) is generally email content based (unless it’s a very strict business/LAN special setup).
LAN = Local Area Network
The vast majority of your clients will be using online webmail programs like Gmail or email client software like Outlook to download email from a POP server. The type of default SPAM filtering done by these programs is content based unless a user has manually created special criteria for SPAM filtering.

Most of these programs have a ranking system which attributes a SPAM score to your email based on red flags such as:
•    ALL CAPS IN SUBJECT LINE
•    punctuation in subject line
•    lots of/big images and not a comparable amount of text (try to include at least 1 paragraph per image)
•    sales pitch related words like discount, blowout, special offer, deal of the century, FREE
•    link text that says “click here”
•    ALL CAPS elsewhere in the newsletter, also LARGE or bold font in the Email
•    font color that matches background color exactly
•    successive exclamation points
•    Spelling out a full web address in the email like http://www.freewaytosuccess.net It’s better to use a smaller word/phrase/link like website.
eg: see our Website for the details

Here is a great SPAM checking utility (There are quite a few on the web) http://spamcheck.sitesell.com

Some programs may send all email to the SPAM folder if it isn’t from a recognized recipient, and in some programs like Outlook, this is a setting the user can choose to activate or deactivate.  Here are a few links with instructions to send to recipients on how to add your
address to their safe sender’s lists and address books for several common mail applications:
http://wl.s4m2.com/index.php
http://enews.penton.com/enews/safesenders
http://www.safesenderslist.com

Content filtering is usually not related to bounces.  A bounce never makes it to the inbox or spam folder.

Kind Regards,

Ash Mufareh

**********************************************************************************

Here is an additional list of words/phrases to try and avoid:

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Here is a link to the standard configuration for a popular spam fighting program called “Spam Assassin”…
this is a lot of information, and most of it will probably look like gibberish, but I just wanted to pass it
along in case you find it of interest.  Most mail servers are not going to use this program to scan and reject mail..
it’s not that common for that to happen.  In any case, you may be able to skim through it and take away a general/broader
sense of some things that spam filters may check for.
http://spamassassin.apache.org/tests_3_0_x.html