^start of line
.*any character (except for line terminators), repeated any number of times
Positive Lookahead(?=.*[a-z]) .*any character (except for line terminators), repeated any number of times
a-zone character from a (9710) to z (12210) (case sensitive)
Positive Lookahead(?=.*[@.]) .*any character (except for line terminators), repeated any number of times
@the literal @ (6410 / 1008 / 4016)
.the literal . (4610 / 568 / 2E16)
.{5,}any character (except for line terminators), repeated at least 5 times
.*any character (except for line terminators), repeated any number of times
$end of line
]the literal ] (9310 / 1358 / 5D16)
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
g modifier: global. Finds all matches instead of stopping after the first