How do I use a pre-hashed (MD5)Â email lists to build a Custom Audience for Facebook ads?
There are some old support threads where commenters allude to the feature once being available. Did Facebook discontinue it? I can't seem to find any documentation on Facebook's for Business help pages. We have a partner who has a similar audience but different business. We want to request them to give us MD5 hashes of their 'house' email list to build a custom audience. They might be willing to do this whereas they are unlikely to give us their actual list.
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Open Mar 20, 2017 - 07:18 AM
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