Apple Mail allows you to have multiple e-mail addresses associated with a single account by separating them with commas in the preferences. However, every e-mail address within an account will have the same display name, what Mail calls "Full Name" in the account settings.
As it turns out, Mail supports this. It just doesn't have a way to set this from its own preferences anymore.
Enter Mail Aliases. This thrown-together app allows you to quickly and easily add aliases to any of your existing accounts, which will show up alongside your normal account e-mails in Mail when you go to compose a new message. Try it!
Usual disclaimer applies: using Mail Aliases may cause all your e-mail settings to be lost, your computer to crash, and your firstborn to develop an obsession with erhu music. However, from knowledge of how these things usually work, I'm 93% sure that once you have finished using Mail Aliases, leaving the aliases in place shouldn't break anything even for future updates of Mail.
Copyright (c) 2012 Jordy Rose
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