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Unfortunately, there is no native option in Outlook for this, but with some clever use of the “Import and Export Wizard” and Excel, we can most definitely speed up the process and have full control over who will get added as a contact. It there a quicker way to review the senders and recipients and add them to my Contacts folder without creating a massive amount of duplicate contacts? This is of course a really slow process and I think I've learned my lesson by now. I'm now going through my Inbox and Sent Items folder and right click on a sender or recipient and choose: Add to Outlook Contacts
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Sadly, due to an oversight when migrating my Outlook data from one computer to the other, my AutoComplete cache was lost and since I never added people as a Contact, my Contacts folder is heavily outdated.
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