Choosing a good email client for business is a guarantee for professional communication with partners, clients and customers. Most companies use Outlook since it comes installed with Microsoft Office (legally purchased or not…), while others use Windows Live Mail or Thunderbird as free variants. You should not run away from paid programs that are more stable and advanced for daily use.
Newsletter marketing is a tool by which you promote your brand through emails and also serves for continuous correspondence between companies and clients. It can also serve as a great reminder for businesses to send to their clients who have given their consent to this type of communication.