Comment by efreak

I usually try to make it obvious what company I have the account to, it makes it easier to track down in cases where the service isn't one that sends mail often. Samsung will not let me use Samsung in my email address. Many companies don't want your email address to include their name.

After I give up and use a real address, some companies will reject my personal first@last.family address because it's still Y2K and .family is not a valid tld.