The cross device retargeting feature, however, will be limited to the signed-in users. Until now, Google mainly focused on solving the attribution problem of tracking conversion activity that span across several devices with metrics and reporting.


If you've lately found that your mass-mailing campaign tanked, reason could be that you forgot to fine-tune your email marketing strategy. Despite that much of effort you put into your email marketing campaigns, if you aren’t getting open rates and click, you need to revisit your email marketing strategy.