Digital correspondence doesn't need to be soul-sucking.
Jennifer Aaker and Naomi Bagdonas teach a course at Stanford University’s Graduate School of Business on the power of humor as a leadership skill. The school grants the same academic credit for the course that they do for Financial Accounting.
They're written a book on the topic called Humor, Seriously: Why Humor Is a Secret Weapon in Business and Life (And how anyone can harness it. Even you.) This article was excepted from that book. Do yourself and your colleagues a favor and read it.
Article: 3 Ways to Fold Humor and Humanity Into Your Work Emails