This brings up an additional point. I personally prefer to write most of my long Email posts in a separate wordprocessor and then copy the contents of the file into the Email program. I have found that many Email programs get hung up, crash, or lose their link at the worse point in time. If you have just spent two hours writing a four page story outline, only to find it all disappear in a blink of an eye, then you will never again make this mistake. I now limit myself to no more than three paragraphs of text in an Email before choosing to do the original composition in a wordprocessor.
Maps are always an important consideration for a campaign but they require special attention.
If you have a web page then it is best to post them on the web page as then they will have the least chance of being altered from what you intended. The second best choice is to go with a text map. I recommend that you use a typewriter font that equally spaces out each character and space when making all text maps. When I create text maps, I first generate a map specifying the underlying terrain. I have found this conveys the information to the players and allows them to easily understand the terrain of the map and the situation that is being represented.