p01-contact : simply add contact forms in your pages

[Oleg06]

I'm trying to get this plugin to work with AJAX in order to be able to use it in modal windows (button in the sidebar) without reloading the page, the main thing, as if I did it, but I can't figure out the errors, because it's not strong if there is some errors in filling out the form, the message seems to be sent, but for obvious reasons it does not come to the mail, I would like in such cases not to send messages, but to display texts indicating errors. For example, if you enter letters instead of numbers in the phone field, the form will be sent, but the message will not come.
http://otzyv.getsimplecms.ru/kontakty/

If there are people here who are ready to help the community, tell me what else needs to be done.