8

I have a list of emails, and I want to change the two letters before "@" and the first letter after "@" using Notepad++.

For example:

username@yourdomain.com

becomes

userna**@*ourdomain.com
  • 9
    Just an obvious remark, the concrete example you gave shows how useless this pattern would be to anonymize email addresses. It’s usually better like x******@y***.com – eckes Mar 15 at 11:11
  • @eckes would that even be possible in N++? – WELZ Mar 15 at 17:13
  • 3
    @WELZ Yes but its more work, a half working sample would (.)[^@]*@([^.]).*(\.[a-z]+) use 3 capture groups which you can address in the replace with string: \1***@\2***\3 - uses a fixed number of mask characters but this is actually good. – eckes Mar 15 at 18:17
31

I want to change the two letters before "@" and the first letter after "@"

  • Menu "Search" > "Replace" (or Ctrl + H)

  • Set "Find what" to ..@.

  • Set "Replace with" to **@*

  • Enable "Regular expression"

  • Click "Replace All"

    enter image description here

Before:

username@yourdomain.com

After:

userna**@*ourdomain.com

Further reading

  • DavidPostill thanks,it worked for me. – loveman2019 Mar 15 at 8:17
  • I'd say it should be .?.@. as there might not be two characters before @. – n0rd Mar 16 at 18:55
  • 1
    @n0rd The question specified two characters, but you are correct if there is only one. – DavidPostill Mar 16 at 19:07
10

You can do this by using a regex search/replace.

At the bottom, select Regular Expression.

In the Search for entry, you type in: ..@. In the Replace with, you type in **@*

Then press the button Replace All

This works because Regex searches will only replace if its search criteria matches exactly. The match is explained as follows:

..@. There are 3 dots and an @:

  • @ has no special meaning in regex so it means a literal @.
  • . means any character, exactly once. By writing .. it means 2 characters of any kind, as long as there are 2 characters.

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