\S+any non-whitespace character, repeated at least once
@the literal @ (6410 / 1008 / 4016)
\S+any non-whitespace character, repeated at least once
\.the literal . (4610 / 568 / 2E16)
Non-Capturing Group(?:[a-zA-Z]{2}|com|org|net|gov|biz|info|name) 1st Alternative[a-zA-Z]{2} Character Class[a-zA-Z]{2} {2}matches exactly 2 characters from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
comthe literal text com (case sensitive) orgthe literal text org (case sensitive) netthe literal text net (case sensitive) govthe literal text gov (case sensitive) bizthe literal text biz (case sensitive) infothe literal text info (case sensitive) namethe literal text name (case sensitive) \ban ASCII word boundary
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string