Just replying to my own comment to say that folks should think very carefully about switching to a personal domain name for email, for the very reason mentioned by the OP.
What if your domain registration lapses and someone else grabs it? What if you can't afford the cost five years from now? What if you just don't like the domain name someday? All of these reasons will be problematic and some can result in identity theft and significant fraud. It's definitely not a decision to be taken lightly, particularly if you have a lot of online accounts.