To be specific: How can I use one email address and different names? I used to do this with Eudora.
Mail.app > Mail > Preferences > Accounts > select account > add Email Addresses as a comma-seperated list
MrHoffman: thank you for the answer. You answered to the question: many email addresses and different names, it seems. Please read my question once again and let me know if you have a solution.
Retrieving data ...