What is the best way to represent a data using grok when an emailid is inside a quoted string?

[warkolm (Mark Walkom)]

They are definitely not the same, see https://github.com/elastic/elasticsearch/blob/7.14/libs/grok/src/main/resources/patterns/grok-patterns#L19 and https://github.com/elastic/elasticsearch/blob/7.14/libs/grok/src/main/resources/patterns/grok-patterns#L4 respectively.