The Lewis Center for Church Leadership recently shared an article about church e-newsletters and the notoriously low open rates of enews in general. I found it particularly insightful that the article mentions that print newsletters are probably not any more widely read.
The author, Martin Davis, writes:
"Within the realm of religious media, the average open rate for emails is 29.6 percent and only 3.7 percent of readers click one or more links, according to MailChimp, a service that disseminates billions of email newsletters monthly. but there are some things you can do to improve engagement."