Unless you are using a beta version of iOS 5, there isn't an easy way to change the e-mail alert tone on your iPhone. I found a way that doesn't cost anything or require you to jailbreak your phone.

Changing app alert tones is a great way to help you distinguish between notifications on your iPhone. You'll know if you're receiving a text or an email without taking your iPhone out of your pocket.

In iOS 17.2 and later, Apple lets you customize the alert tone used by your iPhone for default notifications. This is good news for anyone who does not like the "Rebound" tone that Apple introduced in ...