Best practices for asking for email and Calendly call?

Two questions:

EMAIL

I tested the same quiz asking and not asking for their email. These are the results:

• NOT asking for their email: completion rate: 32%
• Asking for their email but not mandatory: completion rate: 15%

I guess they simply don’t get that this field is NOT mandatory…Almost nobody knows that they can skip that with OK or the little arrow on the bottom right.

→ Should I add a question (with logic) before the email form and ask them if they e.g. want to receive an email with additional information? Would that be a better practice?

CALENDLY
Something similar happens with the calendly “card” that is also not mandatory, they don’t get it that they can simply skip it…

Moreover I can’t edit the button label there that says “Send”. btw: that makes no sense at all...it should better be labeled “skip” as if they want to book a meeting they don’t have to press this button….

→ Should I add a question (with logic) before the calendly card and ask them if they e.g. want to book a call to e.g. clarify further questions? Would that be a better practice?

Here is a test version of the quiz if you want to check it out.


Thanks for your input.

Cheers,
Cesare