There are plenty of Email marketing benefits. Traditional methods of advertising do not offer the same types of benefits that Email marketing does. With Email marketing, you can target specific people based on their interests. You can have detailed notes on people that list their interests so you can create a list that includes people with similar interests. This is better than sending out a mess Email to an untargeted group of people. The effectiveness of this will be minimal.
There are other Email marketing benefits. You can track the status of your marketing campaigns from beginning to end. You can see who has opened your Emails and who has clicked on the links. You can also see how has opted-in or opted-out from receiving any further Emails from you. Another benefit is that when people opt-out from your Emails, they are automatically removed from your list so that you do not have to worry about manually removing them from your list.