What are the two aspects of creating a successful email marketing strategy?

Here are  the two important and powerful aspects to make any email marketing campaign successful:

1. Contact Management: It is a strategy that focuses on using a software program to easily store and source a contact's information. Contact information includes contact Name, email address, contact history etc.

Using database and content management strategy we can: a) see every aspects of every contact b)Organize contacts to keep the healthy database c) if necessary integrate contacts every tool you use

2. Segmentation: Segmentation is dividing contacts in to smaller groups based on similarities. With the help of this you can tailor the message to be more relevant and engaging to the people receiving the email. Keeping database clean and healthy always should be on priority.