iPhone 4 alarm and email details

Let's clarify some details about the iPhone 4's alarm:

• The alarm rings even when on silent mode
• The alarm volume is determined by the ringer volume
• Music will still play through the speaker on silent mode

And about the email:

• Deleting email from Yahoo puts it in Trash
• Deleting email from Gmail archives it (this is by default, you can cause it to go to trash too)

Ringtones:

• You can set custom ringtones, but you have to convert to AAC, rename, then transfer using iTunes. This is much more troublesome than simple phones.
• You cannot set new alarm/message tones other than the options from Apple, unless you jailbreak.