How to create/use personal Address Book entries in Mozilla Thunderbird

Creating personal Address Book entries

1. From the File menu, go to New, then Address Book Card.
   
2. Fill in the requested contact information. (At a minimum, you should put in a name and an e-mail address.) Then click on OK.
   

Using personal Address Book entries

1. When composing a new message, start typing the name, nickname, or e-mail address of the entry you wish to use, and it will auto-complete to your Address Book entry.