# Thunderbird Configuration on Windows for Secure Mail [[Prev|thunderbird4]] | *step 5 of 17* | [[Next|thunderbird6]] ## Composition & Addressing 1. The essential choices for Composition & Addressing are: * /!\ uncheck Compose messages in HTML format * Note: you can still send HTML messages at any time by changing HTML format when you compose a new message * Start my reply below the quote 1. These simple choices will improve your [[posting style|https://secure.wikimedia.org/wikipedia/en/wiki/Posting_style]] and earn respect for adhering to netiquette. 1. Proceed to the [[Next|thunderbird6]] step [[!img tbird5.png align=left]]