 All right. Here is a request from a teacher who wants to make user names into email addresses. So here is a list of user names similar to how Humboldt has their user names, although these ones are not real. And let's say that you wanted to append those with Humboldt.edu. What we'll do here is we'll use concatenate, what type equals concatenate. And then notice it'll tell you what to do with it. So it's asking for text one. Then comma, for text two, we can refer to a cell or just write in here. I can use quotation mark at Humboldt.edu and quotation mark. And that's it. I'm done with my concatenate. I'll hit enter. Let's make this wider. There's that email address. I'll double click right here to go all the way down the contingent cells. There are my email addresses. Note that these are still live formulas. So if something here changes, the email address will change. If you don't want that, you could just shift down, control copy. And then you can paste as plain text. Once you paste this plain text, that formula is gone. So those are just email addresses. Quick bonus. Let's say you want to format that into a way that's easy to paste into Gmail. You could use concatenate again and just say that this one equals that one. And that this one equals concatenate this comma quotation mark comma space quotation mark. And so what that'll do is, whoops, sorry, you'll want to do this one. Comma space comma and this one. So we're going to concatenate concatenating. This one right here, C2 with this one. So the one above it with the one next to it with a common space between it. So I hit enter and we'll have that list growing. So I can just double click this so that this final one is the entire list. Control copy this and paste this as plain text right here. And you'll see that this is just a list of email addresses ready to paste into Gmail. Hope you enjoyed it.