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Your example click rate is about an order of magnitude higher than the average.

I think it depends on the content and audience. I routinely get open rates in the mid 20% range when I send out a newsletter email.

Selecting an email to delete it in the Apple mail.app also opens it. Doesn't mean I'm actually reading it.

I thing that the average is for generic marketing campaigns, At my work we have between 5-15 ctr on emails, just because the content is noteworthy