Adding support for Imnica Mail

WordPress version:
Optin Revolution version:1.08

I did this: Nothing

I expected the plugin to do this:Nothing

Instead it did this:Nothing

Can you add support for imnica mail or generally custom fields so we can get it tto work than with other email marketing providers than the 5 you offer?
That is simply limiting.

Thanks

https://www.ads-software.com/extend/plugins/optin-revolution/