Bug Report #2

Thanks for fixing the Security Bug. So we can go to the next bug:

so your Ajax call is against the existing page but not against wp-admin, which in turn does not allow a reasonable hook.

https://plugins.trac.www.ads-software.com/browser/mailin/trunk/sendinblue.php#L785
https://plugins.trac.www.ads-software.com/browser/mailin/trunk/js/mailin-front.js#L135

Ps. Every change to the code is the opportunity to close the other bugs and wishes of the community as well as to implement the hooks and actions