Identify Repeating letters

[Esmeralda_In_Paris]

Hi, 

I need to clean up a list of email addresses. I have noted many emails with repeating letters such as :

xxx@gmail.com
xxxidmcho@naver.com
xx.xxx@gmail.com
xxx@xxx
avaxxxava@gmail.com
xxxxx.yyyyy@hotmail.fr
xxxprettyboy@naver.com
lucaslucasxxx94@gmail.com

could you please help me find the emails with a number of repeated letters? 

thank you 

I have tried this Regex 

([:alpha:])\1+

but it does not 

[mceleavey]

Hi @Esmeralda_In_Paris ,

This is a tricky one as you have repeating letters in multiple sets within a single string, so I had to break it out into a batch macro:

You weren't far off with your regex, but the regex was only telling it to recognise any repeated characters but only return the grouped set, which is singular. I therefore used the regex tool to tokenise to rows on any repeated character, so I ended up with the following:

This told me which characters repeated. I then used this in a batch macro which used the following:

Which is basically the same as yours, but I'm going to overwrite the value in the defined set with the character identified in the first step. This then becomes the value of the first set as a dynamic value.

I then bunched the second clause into a parsed set, which effectively returns the rest of the letters in addition to the first. I then smooshed them together in a formula.

This gives the following:

I hope this helps,

M.