You can use this flow to create a Zapier to send a message in Discord when a campaign is completed in Instantly by clicking the link here.
Follow the steps by steps below for the instructions.
Go to your Zaps editor and click on Create a Zap:
Type Instantly in the search bar and select it from the drop-down menu.
In the event field, select New event.
Click Continue.
Click Sign in to connect your Instantly account and paste the API key.
Note: You can get your API Key from the Integrations page and copy the Zapier API key:
In the pop-up window paste your API key and click on Yes, Continue.
After you've connected your Instantly account with Zapier, click Continue.
In the setup action select your campaign and event type: Campaign completed. Click continue.
Test your trigger.
Connect Discord by clicking on "+".
Select the Event: Send Channel Message.
Choose your Discord account (sign in to your Discord account)
Under set up action select your designated channel along with customizing the message box. In this example we included some emojis and said our campaign (using the campaign name from instantly) has been completed.
Test your action.
Go to your Discord channel and see the final result.