The ratio of the amount of revenue generated by an ad campaign to its cost. If you generated $10,000 from a campaign that cost $1,000, your return on ad spend (ROAS) would be 10:1. While similar to return on investment (ROI), ROAS is more focused on the hard cost of a campaign rather than on the overall value of running a campaign, which could include brand awareness or other marketing objectives.

Effective Email Marketing
Email marketing is quickly becoming one of the most popular forms of Internet advertising. This is because there are many distinct advantages to the concept