Lessons from 3 frustrating messages

All the frustration when I take messages help me think about improving my message.
When I receive a message, I sometimes frustrated with something about the message.
It's more likely to happen when the contents of it was shocking, but it's as likely to happen when it's down in an ineffective way.

1. A message the points of which is hard to find. I'm frustrated with aside contents before I reach the key points of the message if they aren't effectively shown.
2. I want a message to communicate an obligation to show kindly what action to take. Where should I call? Where should I go and what should I do? Are there somewhere I get better hint or the way out? When I saw an ad of payment of public medical insurance, I saw the message about our obligation, but no information about our action and help available. 
3. I was frustrated when I got an email with a table with only 2 rows and more than 20 columns. I had to scroll from left to far, far right to see all items. I wondered how many people who receive this table saw all the items (columns) in the table. If I were a sender, I would transpose rows to columns, getting 20 rows by 2 columns table. It would be long from up to down, however I believe it would be much easier to view, because when you view an email, you are more likely to scroll form up to down than from left to right.

This awareness can be a strength in communication for me, who have communication difficulties.
When I'm to write a message to communicate something, I want to keep them in mind and improve my message from these points of views.