I like that this is an easy way to search for different email formats, as well as see if they match your own standards of email formatting. It's also fun to use! Sometimes it can be hard to figure out what format email addresses are in, but this makes it much easier. Also, I would love to have more options to add to the database, such as a "no format" option.
That would make it even easier to search for other people's emails without having to go through all of them manually. This has helped meβ¦