You can change the mail campaign for 1 or multiple deals.
To change the mail for a single deal:
Step 1. Click on the deal.
Step 2. Scroll down to the heading called "Outreach Campaign" and click Options.
Step 3. Select a campaign or a single mail template. Click Save.
To change the mail for MULTIPLE deals:
Step 1. Click the 3-DOTS button in the top right.
Step 2. Select deals (be careful not to select ALL deals unless you mean it)
Step 3. Click Edit Selected.
Step 4. Edit Mailing Options
Step 5. Select a Mail Campaign or Mail Template.
Step 6. Click Save.