<p>I'm trying to find about ALL the possible options that I can set in <code>web.config</code>.
Surprisingly, I can't find this at all. I expected it to be somewhere inside <a href="http://msdn.microsoft.com" rel="noreferrer">MSDN</a>.</p>

<p>I know I can technically add "anything" to <code>web.config</code>, what I'm looking for is the things that the .NET Framework "as shipped" uses.</p>

<p>In particular, right now I'm interested in the <code>&lt;mailsettings&gt;</code> section.<br>
For example, in many examples I've found, I noticed that they set <code>DeliveryMethod="Network"</code>. 
I'm really curious what other values this attribute can take.</p>

<p>Is there any document on all the attributes and all their values, and all the effects those have?</p>

It all starts on
http://msdn.microsoft.com/en-us/library/zeshe0eb(v=vs.100).aspx
:
```
<system.web>
```
```
<system.web.extensions>
```
```
<appSettings>
```
```
<configSections>
```
```
<connectionStrings>
```