Now let’s add the “Email with Tout” button.
1. First we’re going to add the “Email Tracking” button to your Salesforce Leads. After we’ve installed this for Leads, we will repeat the steps for Contacts and Opportunities. Click your name and then choose “Setup.”
2. Now, we’ll customize your Leads page. From the Left-hand menu, select Customize>Leads>Page Layout.
3. Select the layout that you use and click “Edit.”
4. Now click Buttons. Drag the button over to the “Custom Buttons” section. Click Save.