The representatives of Google AdWords have revealed that all Gmail ads will be deprived of email customer content for the personalization of advertising campaigns by 2018. Therefore, the amount of conversions and clicks can be changed. If one uses domain targeting, it is better to replace it by key words.
Due to such corrections, email advertising will be personalized similar to other Google services. Nevertheless, the company representatives have stressed that impressions will be implemented depending on settings given by a customer. One can change them anytime.
You can learn more at RACE 2017!