As context (not that it makes it better), but this data is sent hashed[0]. Advertisers that don't send this data are at a severe disadvantage when running ads

As context (not that it makes it better), but this data is sent hashed[0]. Advertisers that don't send this data are at a severe disadvantage when running ads on social media due to the privacy changes Apple rolled out. Inexcusable behavior, but this is why it was done. [0] https://developers.facebook.com/docs/marketing-api/conversions-api/parameters/ https://developers.facebook.com/docs/marketing-api/conversio...