To integrate Manychat 'Send to Messenger' button with your Clickfunnels confirmation page, follow these simple steps.
On your Clickfunnels page, add a button and select Custom JS/HTML, then click "Open Code Editor".
In AEvent, go into your Timeline settings and click on the Code heading.
Scroll down to the ManyChat Bot heading and copy the code from the HTML box.
Go back to the Clickfunnels page, paste the code in, and save the page.