You can (and should) select a default "from" address and "from" name for each of your lists. This is the information that will appear in your contacts' inbox and emails from you. You can customize either of these selections for individual messages as you create them.
This will save you from having to type your "from" name and "from" email address each time you author a message. Instead, when you go to create a new message, this information will be filled in by default.
1. Navigate from the home menu to Manage.
2. Go to Lists.
3. Then List Settings.
4. On the List Settings page, scroll to the default settings. Here you have the opportunity to write in your desired From Address and From Name.
5. To save your settings, scroll to the bottom of the page and click Commit Changes.