I don't do the same very often, but here's one from 2015: "Hi Professor Harris, I still talk about how well your phonetic approach to Spanish 1 worked when yo

I don't do the same very often, but here's one from 2015: "Hi Professor Harris, I still talk about how well your phonetic approach to Spanish 1 worked when you taught me over 25 years ago. Since email makes it easy to mention this to you, I thought I would."