Email, Messaging, & Video Calls Texting & Messaging How to Select Where Sent Messages Are Kept in Mozilla Make a new Sent file in Thunderbird by Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated on February 20, 2020 Texting & Messaging Email Texting & Messaging Video Calls Tweet Share Email Mozilla Thunderbird automatically keeps a copy of every message you send. By default, it places that copy in the Sent folder of the account from which it is sent. But you can change this to be any folder in any account. For example, you could collect all sent mail from all accounts in the Sent folder of Local Folders. Instructions in this article apply to Mozilla Thunderbird 68 or higher on Windows 10, 8, or 7; Mac OS X 10.9 or higher; and GNU/Linux. Specify the Sent Mail Destination in Mozilla Thunderbird The settings for sent email messages in Mozilla Thunderbird are in the Copies & Folders section of the account settings. You can change where copies of sent messages are stored or stop saving them altogether if you wish. Create the folder where you want to store copies of sent messages before you begin. There is no option to create a new folder in Copies & Folders. Start Mozilla Thunderbird. Select the menu in the upper-right corner of the Mail window. Select Options in the menu that appears. Choose Account Settings. The Account Settings dialog box opens. In the left pane of the Account Settings window, select Copies & Folders. In the When sending messages, automatically section, select the Place a Copy in check box. Select Other. Select the Other drop-down arrow and choose the primary location where you want to store copies of sent messages, such as your email account server or Local Folders. Choose the folder in that location where you want to store sent message copies. Select OK to apply the changes and close the Copies & Folders window. Change the Location of the Sent Folder If you want to save copies of sent messages in the Sent folder in a different location, such as your email server or the local Sent folder in your Thunderbird app, change the default location. Start Thunderbird and select the menu in the upper-right corner of the Mail window. Select Options near the middle of the menu that appears. In the Options menu, choose Account Settings. The Account Settings dialog box opens. In the left pane of the Account Settings window, select Copies & Folders. In the When sending messages, automatically section, select the Place a Copy in check box. Select the location you want to use next to Sent Folder on under the Place a Copy in checkbox. Select OK to apply the changes and close the Copies & Folders window.