They intend to have a free tier, but without the most important feature, e-mail at your existing e-mail address. I've set up my kids with e-mail addresses from this domain, and have a couple accounts myself, for ten accounts in all. The cheapest paid option is going to be $6 (USD, presumably) / month / account, or $720/year for the 10 accounts, which is a non-starter, as I'm not using this for a business.

If possible, I'd like to keep the e-mail accounts working. I am able to administer my DNS settings, so changing the, uh, MX records shouldn't be too hard.

What options should I look at? I gather that running your own e-mail server is horrible unless you want to spend your life running the server. Are there inexpensive services that will host e-mail with custom domains?