When composing an email in Thunderbird it would be more professional to select the font size with numbers (8,9,10,11 etc.). With Small, Very small, Medium etc. it looks different on every system. I can't take that seriously. Thanks a lot
To be able to send an e-mail to a mail address, you must either first go to Address Book. You can also start writing an e-mail and then when you want to get the mail address from the address book (Tools/Address Book), Thunderbird starts a new mail ag...
Sorry guys, I was quite cheeky. I really didn't know the trick with the F9 key to make the address book visible when editing an e-mail. Maybe also because I didn't find a corresponding description anywhere? But yes, with F9 it is quite alright. It's ...