Email extraction is the process of scanning a block of text with a regular expression to identify and collect all strings that match the pattern of an email address (
[email protected]). This is useful when you have a document, web page export, or data dump that contains email addresses embedded in surrounding text and you want a clean list. Common use cases include extracting contact emails from web page source code, pulling recipient lists from exported conversation logs, and harvesting emails from CSV files with inconsistent formatting. The extracted addresses can then be imported into an email client, CRM, or mailing list.