If you are not receiving email at Mozilla Thunderbird it may be being intercepted as spam. There are steps to make sure you get emails from the people and domains you want.
- Click the Address Book button.
- Make sure the Personal Address Book is highlighted.
- Click the New Card button. This will launch a New Card window that has 3 tabs: Contact, Address and Other.
- Under the Contact tab, copy and paste email@example.com into the email dialogue box.
- Click OK.