The huge white space on the right appears more often than not in Gmail for Google Apps. This does not leave much horizontal width for email contents. Is there a way to prevent this?
In Gmail, what causes email content to yield to white space at right?
gmail;google chrome
That space is reserved for ads and for the people widget (if enabled). The only way to prevent it or to remove it is by using some Greasemonkey/Userscript or browser extension. (See this one if you are using Chrome.)