Regular Expressions 101

^start of string

Group 1(RCPT\s+TO:\s*<.*>.*)

RCPTthe literal text RCPT (case sensitive)

\s+any whitespace character, repeated at least once

TO:the literal text TO: (case sensitive)

\s*any whitespace character, repeated any number of times

<the literal < (60₁₀ / 74₈ / 3C₁₆)

.*any character (except for line terminators), repeated any number of times

>the literal > (62₁₀ / 76₈ / 3E₁₆)

.*any character (except for line terminators), repeated any number of times

\s+any whitespace character, repeated at least once

NOTIFY=the literal text NOTIFY= (case sensitive)

\S+any non-whitespace character, repeated at least once

Group 2(.*)

.*any character (except for line terminators), repeated any number of times

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^(RCPT\s+TO:\s*<.*>.*)\s+NOTIFY=\S+(.*)

New

RCPT TO: <myemail@gmail.com> NOTIFY=SUCCESS,FAILURE,DELAY ORCPT=myemail@example.com

$1 NOTIFY=NEVER$2