While it's not as clean as a way to do this directly, i've found a flow that works. It's especially good for non-profits as there's no pesky subscriptions to pay (all of the other services I tried had paid plans, usually after a tiny amount of clicks like 25) as it's free.   The service is https://addcal.co, you don't actually have to sign up to create the links but if you don't you can't edit then. You can then use the HTML code copy button to copy the code to the email, and you can track the clicks inside constant contact (the type of calendar is in the URL). The website also has analytics but it's easier to do everything inside CC.   I'd be interested if anyone has managed to get it integrated into workflows? ... View more