How to extract all mail id from notepad

To extract all email IDs from a Notepad file, you can use a combination of text manipulation techniques and regular expressions. Here's a step-by-step guide:

Method 1: Using Notepad++

1. Open your Notepad file in Notepad++ (a free text editor).
2. Press Ctrl + H to open the "Find and Replace" dialog box.
3. In the "Find what" field, enter the following regular expression: \b[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}\b
4. Make sure the "Regular expression" checkbox is selected.
5. Click "Replace All" to find and highlight all email IDs in the file.
6. To extract the email IDs, you can copy the highlighted text and paste it into a new document or spreadsheet.

Method 2: Using Notepad

1. Open your Notepad file in Notepad.
2. Press Ctrl + F to open the "Find" dialog box.
3. In the "Find what" field, enter the following regular expression: \b[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}\b
4. Make sure the "Use wildcards" checkbox is selected.
5. Click "Find All" to find all email IDs in the file.
6. To extract the email IDs, you can copy the text and paste it into a new document or spreadsheet.

Regular Expression Explanation

The regular expression used in both methods is designed to match most common email address formats. Here's a breakdown of what it does:

• \b: Word boundary (ensures we match whole email addresses, not parts of other words)
• [a-zA-Z0-9._%+-]+: Matches one or more characters that are letters (both uppercase and lowercase), numbers, dot (.), hyphen (-), underscore (_), percent (%), or plus sign (+)
• @: Matches the @ symbol
• [a-zA-Z0-9.-]+: Matches one or more characters that are letters (both uppercase and lowercase), numbers, dot (.), or hyphen (-)
• \.: Matches a period (.) character
• [a-zA-Z]{2,}: Matches the domain extension (it must be at least 2 characters long and consist only of letters)
• \b: Word boundary (ensures we match whole email addresses, not parts of other words)

Tips and Variations

• To extract email IDs from a specific format (e.g., only from a specific domain), modify the regular expression accordingly.
• To extract email IDs from a specific range of lines or sections in the file, use the "Find" dialog box's "Find what" field and enter the desired text or pattern.
• To extract email IDs from a large file, consider using a text processing tool like grep or sed in a command-line environment.

Remember to always be cautious when working with regular expressions, as they can be complex and may not match all possible email address formats.