[LeonM]

I particularly like Matomo as it offers the option to honor the browser DNT (Do Not Track) preference.

[ignoramous]

Curious: Is that what you use for mailhardener? How much does it cost to keep it running?

[LeonM]

Yes, Mailhardener uses Matomo to track basic statistics on our website. Mostly just visitor counts and mapping where traffic comes from.

In terms of costs I'd say it's neglectable, it runs on a container in our existing infrastructure. Required resources and maintenance are minimal.