Actually example.com is reserved for test usage and this kind of things. You are right for the two others thought.
But using example on someone else's website to avoid using your own email address is not using it in documentation. .invalid would be a better choice.
I agree that I'm quibbling over probably unimportant details :-)
on the other hand, you get a lot of free accounts and private information. I own a domain that was once used as webmail for a couple of hundred people I guess. Looking through the catchall is awkward and invasive...
Re:Xkcd: Encryptic
by Sami_Lehtinen on Monday November 04, 2013 @10:55AM
(#6669244)
Technically message won't get delivered if it's rejected on SMTP envelope level.
[email protected]
[email protected]
Were all found.
I feel sorry for the people paying a lot of money to buy these short domain names, and finding huge amounts of spam being delivered to them because people have misused domain names that don't belong to them.