Portions of this content are ©19982022 by individual contributors. Moves the toolbar for mails back up above the tabbar. Thunderbird is now part of MZLA Technologies Corporation, a wholly owned subsidiary of Mozilla Foundation. You can add other types of recipients by using the CC and BCC buttons. In other words, type the email address of the person to whom you want to send the message. There will also be a To field where you have to add the recipients email address. From v2.1.0 the following features are added: * Customize icon display individually (Choose 'Individual' for the 'Show' selector) * Customize Quick Filter toolbar (right-click on the toolbar and choose Customize Toolbar) * Rename toolbar buttons * Hide Calendar and Today pane buttons * Star and Print buttons are added to the message header toolbar (hidden by default) See the following post for details of v2.1. Version 2.1.0.1 Info Last Updated: JReleased under Mozilla Public License Version. Inside the toolbar of thunderbird, click on the Write button, and a window will open up. You can do the followings: * Change icon display: Icons beside text, Icons only or Text only * Change order of toolbar buttons * Hide unnecessary buttons * Add spacer and separator * Add Conversation, Tag and Forward As buttons, which removed from Thunderbird 78 For details, refer to my blog post. This add-on reproduces the feature on Thunderbird 78. Thunderbird 78 removes customize functionality of message header view toolbar.

Mozilla thunderbird mail toolbar