hi All,
As you already realized, e-mail is one of the main communication methods nowadays and in my opinion email marketing has a vast and solid potential.
Here are 2 great tips for your email campaigns:
1. Make sure your email template is mobile optimized
2. Use a clear and appealing call for action and place it above the fold
And since there is always more to know, here I let a useful link 
http://mashable.com/2015/09/10/email-marketing-dinosaur/#CYERvXJGHZqh
Cheers,
ilana