And resist the urge to write a book. Business e-mails are better off short; the equivalent of a page or so is sufficient.

还有，要抑制长篇大论的冲动：商务电邮最好简短；相当于一页纸左右的量就足够了。

youdao

Rather than write a number of separate articles, I plan to periodically release an updated e-book that you can download to your tablet or other device and read at your leisure.

FORBES: Big Data Analytics and Social Business: An E-Book