Wednesday, November 07, 2007
2. Don't Stress about Spam Words: Many experts will tell you to avoid words like "free" or "sale". In my opinion, ISPs tend to be moving away from content based spam filtering in favor of reputation based filtering. In other words, your sending IP address and from email are more important than whether or not your email contains certain words. Personally, I've used words like "free" in the subject line without any affect on delivery rates.
5. Remove Inactive Subscribers: Inactive subscribers are the most likely to get you in trouble by clicking the spam button. Consider automatically removing a subscriber that hasn't opened an email in several months.