There are big differences between a new address book and a list/group. Think of these as you would a phone book: there’s the Yellow Pages with the business listings and the White Pages with the individual listings. If someone was listed in both books, it would be rather confusing – is that the same person, which phone number would allow me to speak to that person, etc, etc. Try not to duplicate the same email addresses in multiple address books. Thunderbird will be confused and so will you….and then you’ll tech support…and none of us want that, or at least I ‘m sure they don’t.
An address book is basically a collection of contacts that are usually related in some way. For instance, the “Church” address book will probably have everyone from your church and the “Family” address book will have your family members.
A list is simply a collection of addresses within that address book that allows you to email a bunch of people at once, without having to add each person’s email address separately. For instance, if you wanted to email all your uncles, you would set up a list named “Uncles” inside the “Family” address book. It wouldn’t make sense to create the “Uncles” list inside the “Church” address book would it? Ok…maybe in some cases it would, but let’s just pretend it wouldn’t! I’ll write a follow-up article on Making a List with a step-by-step tutorial on creating a list and adding people to it.