E-mail is the best decision to announce this annual meeting of the company. The company must consider the expenses of international calls. It could also take plenty of times to send letters and receive feedback later. Time constraint is very important for doing business. Other examples are Internet and Intranet.
Internet is the world's largest communications network.
Basically, it is a special collection of interconnected networks, all freely exchanging information. People using Internet tool to exchange information and ideas over time and distance. In general, the company could use the Internet tool to announce company policy, customer information, corporate report, interactively communication, annual meeting schedule, distribute and share vital resources and information about company, etc. Now, the Internet is a new way of doing businesses because it can increase market shares over networks and revenue of company etc. Other useful tool is Intranet.