Spam Filters

Content Filters
•Applied by ISPs, corporate mail handlers, user software
•Anti-spamsoftware scans subject line and body of email for trigger words and phrases that characterizespam
•e.g.SpamAssassin, major ISPs
•May also look at HTML code
•Assign points for each “bad”occurrence
•As few as 100 messages can trip filters

spamtrigger examples:

•$$$, !!!, Cash bonus
•ALL CAPSin subject line
•“Dear friend”in salutation
•Message is 90% to 100% one image Image to text ratio
•Claims to be in compliance with CAN-SPAM
•HTML font size is large
•Click here
•Money back guaranteeor “no-risk”

http://spamcheck.sitesell.com
Freesite that will test your email and report what elements may be caught byspamfilters

www.lyris.com/resources/contentchecker/
Freesite that will test your email based onSpamAssassin’s rules

http://validator.w3.org
Free site that checks your HTML code against conformance standards