Email.
Email is a great business tool. Email can be used internally and externally making it a quick and easy method of transferring information, documents, pictures and music files. It is important to follow the rules when using email in the work place. As with any written form of communication the tone of the text, spelling, grammar and content should be professional as this will have an impact on the business.
Email has the ability to reach a large group of people simultaneously but as not everyone checks their emails regularly you need to be careful when sending urgent mail. If you are in a hurry to get a response from someone it would probably be better to use the phone.
Because in an business situation email can be accessed by other people it would not be a very good idea to send personal and private information.
On a personal level I use email to communicate with my family and friends. Most of my brothers and sisters live in different towns and states so email is a great way for us to send each other photos as we dont get to see each other very often.
Plain English
When I was at school learning how to write resumes and letters we were encouraged to use big words and flowery sentences to make it sound like we were professional.
These days plain english is used in writing business documents, letters etc. I think this is a more effective way to communicate as the simpler the content is the easier it is to understand. I know if I read something that uses big words and long sentences I tend to lose track of what Im reading, and have to re-read the document over and over until I get a clear understanding of what the message is. Writing in plain english saves time for the reader and they are less inclined to just throw the document in the bin.