I'm using Windows Vista, Thunderbird 31.1.2 and Mail Merge addon 3.9.0

When I set up mail merge, I had three columns 'First Name' 'Last Name' and 'Email' in a .csv file.

I created a Template to use and used the exact spelling of the .csv file column headers.

see images below.

Can you post an image of the Template you are using and the .csv file showing the column headers.

here are screen shots i created a simple csv file to test and still behaves the same i am using xp TB 31.1.2 and mail merge 3.9.0.

I tried the <> around {{Email}} in the to column and it is still doing the same thing and not working

In your third image you are using: {(Email))

The brackets you are using are incorrect. The first bracket is correct = { But all the others are ( or ) and this is incorrect.

You need to try {{Email}} first and if this fails use <{{Email}}>

Thank You!