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Note: 

The emails are given for an idea about domains and types of emails. The initial ID of email has been removed with (EMAIL) letters in these sample addresses 

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abc@ai.com.pl
abc@kki.net.pl
abc@tlen.pl
abc@versanet.de
abc@post.pl
abc@wp.pl
abc@neostrada.pl
abc@tlen.pl
abc@gabo.pl
abc@miood.pl
abc@wp.pl
abc@vp.pl
abc@e-agdrtv.pl
abc@rrteam.pl
abc@px.pl
abc@wp.pl
abc@neostrada.pl