On Wed, 26 Feb 2003 20:27:19 -0800 Anne P Mitchell <Anne> wrote: > I'd be really interested to know if any of you have any information > (statistical or even anecdotal) on the following:
I don't track, so this is anecdotal. > 1. Average % of your mailing list mail which you figure is undelivered > due to spam filters erroneously blocking it as spam. Roughly one message in forty contain sufficient keywords that 0.5% of my target MXes bounce the message (that's a bit high actually -- they keep getting unsubscribed due to the bounces thus keeping the percentage down). > 2. If your list is now confirmed opt-in, but was not at one time, > what % of subscribers did you lose by going to confirmed opt-in? And > how, if at all, has the quality of the subscribers, or the list in > general, changed? My main list is now double opt-in (standard Mailman). Prior to that it was invitation-only (you had to be sponsored by a member in good standing). Prior to that it was a rather clubby shared secret. I've lost no subscribers due to the transitions that I know of as all were grandfathered across each translation. In the invitation only days it ran just over 85% posters. Now, having been double-opt-in for several years its hovering around 12% posters (total number of posters hasn't grown much, but churn rate in the poster population has (it used to be nearly static)). Quality of posters has almost bell-curved. Previously it was heavily skewed toward the top end. It remains skewed currently, but only by about a couple standard deviation points. Within the population of posters the quality level is a standard power curve. Additionally, reflecting the surrounding market and posting audience, the list has become increasingly commercial in tone and topic (the commercial applications and use of the subject topic) over the last few years.. > 3. If you could sit down, face to face, with the CEO of $BIGISP, what > are the three things you would most like to impress upon them in terms > of how they handle incoming mailing list mail from a list such as > yours? How they do or how they should? I suspect you're not quite asking the question you wish. Note that I'm in a slightly unusual position in that AOL+MSN+Hotmail+Yahoo together occupy less than 3% of my total membership roster. I'll leave this one to others with the note that I'd like to see SMTP extended to enclude VERP encoding within (larger) RCPT-TO bundles. -- J C Lawrence ---------(*) Satan, oscillate my metallic sonatas. [EMAIL PROTECTED] He lived as a devil, eh? http://www.kanga.nu/~claw/ Evil is a name of a foeman, as I live.
