Regular Expressions 101

\v+any vertical whitespace character, repeated at least once

Positive Lookahead(?=To:)

To:the literal text To: (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\v+(?=To:)

New

To: ab@domain.tld
Subject: Der Betreff
From: xp@domain.tld
Reply-To: xp@domain.tld

Hier kommt meine Nachricht

To: ab@domain.tld
Subject: Der Betreff
From: xp@domain.tld
Reply-To: xp@domain.tld

Hier kommt meine Nachricht


To: ab@domain.tld
Subject: Der Betreff
From: xp@domain.tld
Reply-To: xp@domain.tld

Hier kommt meine Nachricht

Regular Expression

Extraction