Yes, Email Marketing & Newsletter are the best efficient way to do online marketing, I believe that you want to win more subscription. Here are 6 Tips of increasing Email Newsletter Subscription for your reference: 1. Promote your ’subscription box’ everywhere. 2. Keep the subscription question Simple! 3. Provide offer to attract more subscription. 4. Refer to a friends. 5. Post your previous Newsletters on your website. 6. Deliver valuable content to current subscribers. Details check here: 6 Tips to Increase Your Email Newsletter Subscription