Contact form 7 autoresponder option. You can automatically send emails to clients/users after submitting the data (instant).
Use Mail (2) option for contact form 7 autoresponder. Enable Mail (2) by clicking on the mail (2) checkbox.
You can add an auto-responding email in the message body section with input shortcodes.
Why CF7 Mail (2) is not sending emails?
Install the SMTP plugin and configure it. Never add a different domain name in the mail (2) “from input field“.
Check “To” input field shortcode is correct or not.