However, I would suggest that you can (and sometimes should) use an email in some of the situations you mentioned above. In many of these cases an email should be followed up with a face-to-face or a personalized phone call, but an email should be used as an initiatory or supplementary form of communication.

Here are the situations in which I agree:
- When you are angry.
- For gossip.
- For sending jokes and chain letters.
- For anything you care that others might read.

These situations are probably true in most forms of communication, but especially in documented emails, texts, tweets, facebook posts, etc.

The following situations, I believe should have email as a form of initiation or supplementation to the conversation:

- If you need to get someone’s attention about an urgent or pressing matter.
- When describing a complicated procedure.
- When you really want to resolve a conflict or misunderstanding.
- When delivering bad news.
- When you want to make a heartfelt apology.
- When typing it takes you longer than making a phone call.

In many of these cases, an email will document your communication and present the issue or solution at hand. For the most part, they will need to be followed up with a personal contact (face-to-face, phone call, etc.). My point being, email can be very effective in these situations and, if used properly, should be used in these situations.

Nevertheless, I appreciate your view and understand why you’d include those in your list. But with the many other forms of communication we use today, I’d say that email can be very versatile as long as you use it appropriately.