Form Submission without completing the validation process

Hello Folks, i need some help with this:

i’m trying to setup a shop form with integrated newsletter registration. Therefore i’m in need of a email confirmation (double-opt in) only for the newsletter, not the order.
There is a verify email processor plugin for caldera, which fits my needs to 50%, the problem is: the whole submission gets paused until the email is confirmed,
but i need the submission of the order to be completed independently from the email confirmation.

Any advice how to do this, maybe a modification of the processor?

I would be really, really thankful for any tip.