Webmail 2.0: Where the only thing more impressive than our regex is our font size

Dear user, welcome to Webmail 2.0, the email client for the discerning, regex-loving individual.

Here's a list of our most impressive atomic regex patterns:

Or, if you're feeling adventurous, try:

Disclaimer: Webmail 2.0 is not responsible for any emotional trauma caused by our regex patterns.

Also, please do not attempt to use our regex patterns for nefarious purposes. We have lawyers.