Inserting a form in an email campaign is bad practice, particularly for reasons of :
deliverability: forms within a campaign email may be considered as spam;
display: the main email clients do not display form scripts in emails (particularly gmail and outlook 2007).
We therefore recommend that you include a call to action or a link to your landing page.
There are many advantages to redirecting to a landing page:
Your Plezi contacts from imports will be identified when they click on the email (by associating their email address with their cookies);
This is an opportunity to better qualify your contacts by asking them more questions;
The more visits you generate on your landing page (if it's indexed), the better for your SEO 😃