Personalized marketing is good for lead generation for data businesses and also events businesses, and can be used also for post event surveys to garner feedback and persuade people to engage (by personalization). Upland Software produces solutions aimed at this very challenge.
The opposite of personalized marketing can be described as generic marketing.
This takes a "one-size-fits-all" / "lazy" approach and carries the risk of becoming "background noise".
While generic marketing messages may be aimed at particular individuals, without adequate personalization it will not give the recipient a strong reason to engage. Rather it can have the opposite effect, as individuals seek to distance themselves/denoise themselves from such mass-market messaging, and creates a negative aura as the individual begins to feel solely like the object of a monetisation strategy.