Restaurants, Real Estate Agents or even a Doctors office. Basically any business that has a list of clients that the business would like to stay in contact with regarding their business.
EX: A pizza owner notices that pizza sales at his/her restaurant are higher on weekends than they are on weekdays.
Solution: With email marketing clients can sign up for FREE via a landing page and receive exclusive offers right into their inbox, so now the owner of the pizza shop can send out promos daily/weekly (or anytime) letting their clients know about new specials or upcoming events. WHATEVER they want their clients to know about.
EX 2: A real estate agent receives a phone call from someone looking to purchase a property, the real estate agent then replies sure let me email you my current list of available properties. There is only one problem, the real estate agent is driving and now must remember to do it when he/she gets back into the office.
Solutions for EX2: The real estate agent simply tells the caller please go to my website.... mywebaddress.com and sign up for FREE and you will instantly receive my most recent inventory of properties that I currently have PLUS every time I update my inventory I will automatically send you an email with the most current and up-to-date list of my properties in my inventory.