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Now that you have your Email Draft, you can open Google Sheets, and you should now see the Mergo icon on the right sidebar
After selecting the Mergo icon. Select the Cateogy Category that says says Mergo - Merge for Gmail 
Once you choose Mail Merge for Gmail. you should see the four headers appear on your Google Sheet
Email Address - Place the Email Address of the recipients in this column
First Name - Place the recipient's first name in this column
Last Name - Place the recipient's last name in this column
Merge Status - Leave this blank
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