Pass contact form date, not with zapier

I just signed up with PieSync and also MailerLite.
In the past, I’ve been able to use the Zapier process to send data to Mailchimp.

Since Im paying for PieSync now though, was hoping there’s a way to do this. Doesn’t appear that PieSync offers any sort of webhook like Zapier.

Any ideas? I’m looking to either:
a) send data right to mailerlite
b) send data to piesync to then wherever I want it to go

Here is my site Read-Only: LINK
(how to share your site Read-Only link)