Since you told me in the Chatterbox that you have huge amounts of email-addresses, I'd suggest you use some kind of database. DBI could be used to save your data to a "real" database. If this is overkill, you might as well use a flatfile database, AnyDBM_File for example. As suggested above: You can use a hash as well, but then you might run out of memory..

Regards,
-octo

In reply to Re: Help! by flocto
in thread Finding unique email addresses (was: Help!) by vxp

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