electronic library newsletter software

I am currently evaluating software options for our Public
Library's new e-newsletters. We need a system that is
easy-to-use, provides reports (# of emails opened, links
clicked etc.), requires little IT dept. time and enables
users to sign up from our web site.

We were looking at RocketSales but people I've directly
contacted are giving it mixed reviews. Does anyone else have
experience with RocketSales or any other software? Any
packages we should avoid?

Thanks,
Lisa Manax Skikos
bond Public Library
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