How to deal with returned emails sent by Mailer Daemon in outlook inbox

I did a mailing, I must have had quite a few old or bad addresses as I got a lot (over 100) returned emails in my outlook from the mailpoet send from my server from Mailer-Daemon.

I want to remove those bad addresses before I send out again. Do I really need to manually go through each returned email and copy and paste the bad email out into a spreadsheet? Is there a utility for harvesting the bad emails if I put them all in a folder?

Does the new mailpoet email sending service take care of bad addresses for me? (I would rather do that)

Thanks!!

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