Or you could simply use the hide app function in the launcher of your choice, such as in GO Launcher , Nova Launcher, etc.

Definitely a good idea for tiny spaces. Though napping will constantly be a temptation if this is a regularly used home office. Or that could just be me.

That right-to-the-point tactic is spot on especially for busy execs.(Not so good for emails trying to warm up a networking acquaintance.) Remember to keep asking from the reader's point of view: "WIIFM?" (What's In It For Me?)