How to make thunderbird not wrap lines automatically? Check Making Thunderbird Not Wrap Lines Automatically:Setting mail.compose.wrap_to_window_width to true.Related posts:How to Make Thunderbird Not Wrap Long Lines Automatically How to Wrap and NOT Wrap Lines in vim How to make Evolution not wrap lines in composed Emails? How to wrap long lines in a text file on Linux? How to Automatically Move Junk Emails to The Junk Folder in Thunderbird Thunderbird Addons to Make Thunderbird Easier to Use How to make Thunderbird check for new messages in all IMAP folders? How to hide my private IP in Email header in Thunderbird?