OT: Extract info from a text file

[Nigel Ridley]

I'm trying to help a friend sort out his mailing list :-(

He's given me a [messy] csv file which I saved as a text file.
It contains all his contacts - names, addresses, email addresses etc.
I want to extract just the email addresses.

Is there a simple script to extract just the email addresses?
I tried using google but the results are a bit vague.

Blessings,

Nigel

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