The default setting of Mozilla Thunderbird merely allows you to set up one signature for all your e-mail correspondence. The least you can do is to either use the signature template or configure your setting every time you send an e-mail to a different group. The solution to this is to learn Quicktext Thunderbird – how to install and use Quick Text, a Mozilla Thunderbird extension that allows you to choose from a list of template signatures, variables, and e-mail forms.
Once you have installed Quicktext, you will notice an added icon above the message window where you can choose among a dropdown list of message templates sorted into different groups. You can also set variables for your first and last name, subject lines, and other information you can lift from your Address Book. The best thing about it is that you can even setup attachments you want to send to several sets of recipients.
Quicktext Thunderbird – how to install and use Quick Text should be mastered by anyone who needs to routinely send the same e-mail messages to a group of recipients. Aside from that, you can also assign a signature to a specific group. You may use the same dropdown menu to insert messages that you commonly use in your e-mails such as salutations, letterheads and other variables. These texts will automatically appear at the current location of your cursor.
To install Quicktext, you just need to follow the instructions on Quicktext Thunderbird – how to install and use Quick Text. Go to the Add-ons page for Mozilla Thunderbird and download the Quicktext extension to your computer. After that, open the Thunderbird application, click Tools on the toolbar, select Add-ons from the dropdown menu and select Install. You will be prompted with another window where you can browse the extension you have download. Select the file and click Open. After that, click Install Now.
Once you have installed the extension, close Thunderbird and re-open it. Go to Write to view the message window and you will find a new dropdown menu just above it. Go back to Tools and select Quicktext to start setting up your message templates.