I'm curious and looking for input from others who mail eNewsletters that give you stats about the user response.

We sent our first one out in Sept. 2011 using Vertical Response. We have used regular mail and just a mailing list previously. This was our first full eNews with no snail mail and analytics.

We found:

604 total.emailed using our regular membership and email list
177 opened the email
426 did not open (but out of those 145 bounced)
381 did not open.

So we had 558 valid emails, and 31.7% opened the mails.

Anyone else who gets analytics from your eNewsletters care to share? If you don't want to post in public, please PM me. Thanks!