Email marketing is one best and successful way to generate leads. And yes no doubt that almost 30% lead comes from email marketing only. But it's all depend on which industry you're dealing with? and what kind of customer is? If you're in B2B industry than email marketing could be succeed.

There are few ways to increase followers on Google+

  1. Share article on daily basis with unique and attractive content.
  2. Enage with audiance and always tag other people while posting
  3. Join other your industry niche group and participate in that group by adding your valuable thought.
  4. Include your Google+ profile link on website and email singnature.
  5. Use Google+ profile link while publishing article on other industry blog.